[beta] Rollup backports

[pietroalbini]

• [master] Backport 1.30.1 release notes #56163: [master] Backport 1.30.1 release notes
• resolve: Fix some asserts in import validation #56147: resolve: Fix some asserts in import validation
• Update books for Rust 2018 #56118: Update books for Rust 2018
• resolve: Make "empty import canaries" invisible from other crates #56117: resolve: Make "empty import canaries" invisible from other crates
• Replace the ICEing on const fn loops with an error #56065: Replace the ICEing on const fn loops with an error
• Issue 56128 segment id ice nightly #56143: Issue 56128 segment id ice nightly
• Forward rust version number to tools #56134: Fix clippy documentation links (first in [beta] Fix clippy documentation links #56156)

r? @ghost

[pietroalbini]

Blocked on #56143 merging.

[pietroalbini]

cc @alexcrichton @Mark-Simulacrum

[alexcrichton]

@bors: p=1000

r=me when good to go

[pietroalbini]

@bors r=alexcrichton p=1000

[bors]

📌 Commit 647cb20 has been approved by alexcrichton

[bors]

⌛ Testing commit 647cb20 with merge 55f75206caeaba5156c7c70cd17846b51c7bc3fd...

[bors]

💔 Test failed - status-appveyor

[kennytm]

Needs to fix the nomicon.

[00:52:41] ---- C:\projects\rust\src/doc/nomicon\src\vec-final.md - The_Final_Code (line 3) stdout ----
[00:52:41] error[E0635]: unknown feature `alloc_layout_extra`
[00:52:41]  --> C:\projects\rust\src/doc/nomicon\src\vec-final.md:6:12
[00:52:41]   |
[00:52:41] 4 | #![feature(alloc_layout_extra)]
[00:52:41]   |            ^^^^^^^^^^^^^^^^^^
[00:52:41] 
[00:52:41] thread 'C:\projects\rust\src/doc/nomicon\src\vec-final.md - The_Final_Code (line 3)' panicked at 'couldn't compile the test', librustdoc\test.rs:332:13
[00:52:41] note: Run with `RUST_BACKTRACE=1` for a backtrace.

[alexcrichton]

Breakage should be fixed in fffcde6, added in #56156 as well, updated OP

@bors: r+

[bors]

📌 Commit 659fcb9 has been approved by alexcrichton

[bors]

⌛ Testing commit 659fcb9 with merge 7dfae34b7bbfaab942ee114c7abe4be3dedecf99...

[bors]

💔 Test failed - status-travis

[rust-highfive]

The job dist-i686-freebsd of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

[01:11:05] travis_fold:start:stage2-cargo
travis_time:start:stage2-cargo
Building stage2 tool cargo (i686-unknown-freebsd)
[01:11:06]  Downloading openssl-src v111.0.1+1.1.1
[01:11:26] warning: spurious network error (2 tries remaining): failed to download from `https://crates.io/api/v1/crates/openssl-src/111.0.1+1.1.1/download`
[01:11:46] warning: spurious network error (1 tries remaining): failed to download from `https://crates.io/api/v1/crates/openssl-src/111.0.1+1.1.1/download`
[01:12:06] 
[01:12:06] Caused by:
[01:12:06] Caused by:
[01:12:06]   failed to download from `https://crates.io/api/v1/crates/openssl-src/111.0.1+1.1.1/download`
[01:12:06] Caused by:
[01:12:06]   [6] Couldn't resolve host name (Could not resolve host: crates.io)
[01:12:06] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "i686-unknown-freebsd" "-j" "4" "--release" "--locked" "--color" "always" "--manifest-path" "/checkout/src/tools/cargo/Cargo.toml" "--features" "rustc-workspace-hack/all-static" "--message-format" "json"
[01:12:06] expected success, got: exit code: 101
---
travis_time:end:1c4fb64c:start=1542955786734286083,finish=1542955786742264422,duration=7978339
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:0028a39c
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:1701e8fe
travis_time:start:1701e8fe
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:01f17867
$ dmesg | grep -i kill

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[kennytm]

@bors retry travis-ci/travis-ci#9696

[rust-highfive]

The job x86_64-gnu-tools of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

travis_time:end:01f22068:start=1542951164650899776,finish=1542951220996369949,duration=56345470173
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#Pull-Requests-and-Security-Restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
Setting environment variables from .travis.yml
$ export IMAGE=x86_64-gnu-tools
---
[01:48:48] test test::test_goto_def ... FAILED
[01:49:48] test test::test_infer_bin ... test test::test_infer_bin has been running for over 60 seconds
[01:50:08] test test::test_highlight ... FAILED
[01:51:08] test test::test_infer_custom_bin ... test test::test_infer_custom_bin has been running for over 60 seconds
[01:52:50] ERROR 2018-11-23T07:26:41Z: rls::actions: failed to fetch project model, using fallback: failed to load source for a dependency on `fnv`
[01:53:50] test test::test_infer_lib ... test test::test_infer_lib has been running for over 60 seconds
[01:53:50] test test::test_infer_lib ... test test::test_infer_lib has been running for over 60 seconds
[01:55:32] ERROR 2018-11-23T07:29:22Z: rls::actions: failed to fetch project model, using fallback: failed to load source for a dependency on `fnv`
[01:56:32] test test::test_multiple_binaries ... test test::test_multiple_binaries has been running for over 60 seconds
[01:56:52] test test::test_infer_bin ... FAILED
[01:57:52] test test::test_no_default_features ... test test::test_no_default_features has been running for over 60 seconds
[01:58:13] test test::test_infer_custom_bin ... FAILED
---
[02:10:20] test test::test_workspace_symbol_duplicates ... FAILED
[02:10:20] 
[02:10:20] failures:
[02:10:20] 
[02:10:20] ---- test::lens::test_lens_run stdout ----
[02:10:20] thread 'test::lens::test_lens_run' panicked at 'called `Option::unwrap()` on a `None` value', libcore/option.rs:355:21
[02:10:20] 
[02:10:20] ---- test::test_bin_lib_project stdout ----
[02:10:20] ---- test::test_bin_lib_project stdout ----
[02:10:20] thread 'test::test_bin_lib_project' panicked at 'Assert failed: Could not find `bin_lib/tests/tests.rs` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/bin_lib/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_all_targets stdout ----
[02:10:20] ---- test::test_all_targets stdout ----
[02:10:20] thread 'test::test_all_targets' panicked at 'Assert failed: Could not find `bin_lib/tests/tests.rs` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/bin_lib/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_borrow_error stdout ----
[02:10:20] ---- test::test_borrow_error stdout ----
[02:10:20] thread 'test::test_borrow_error' panicked at 'Assert failed: Could not find `"message":"cannot borrow `x` as mutable more than once at a time` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/borrow_error/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_deglob stdout ----
[02:10:20] thread 'test::test_deglob' panicked at 'assertion failed: `(left == right)`
[02:10:20]   left: `Null`,
[02:10:20]  right: `100`', tools/rls/src/test/mod.rs:1472:9
[02:10:20]  right: `100`', tools/rls/src/test/mod.rs:1472:9
[02:10:20] 
[02:10:20] ---- test::test_features stdout ----
[02:10:20] thread 'test::test_features' panicked at 'Assert failed: Could not find `"message":"cannot find struct, variant or union type `Bar` in this scope` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/features/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_find_all_refs_no_cfg_test stdout ----
[02:10:20] ---- test::test_find_all_refs_no_cfg_test stdout ----
[02:10:20] thread 'test::test_find_all_refs_no_cfg_test' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_find_all_refs stdout ----
[02:10:20] ---- test::test_find_all_refs stdout ----
[02:10:20] thread 'test::test_find_all_refs' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_find_impls stdout ----
[02:10:20] ---- test::test_find_impls stdout ----
[02:10:20] thread 'test::test_find_impls' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_goto_def stdout ----
[02:10:20] ---- test::test_goto_def stdout ----
[02:10:20] thread 'test::test_goto_def' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_highlight stdout ----
[02:10:20] ---- test::test_highlight stdout ----
[02:10:20] thread 'test::test_highlight' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_hover stdout ----
[02:10:20] ---- test::test_hover stdout ----
[02:10:20] thread 'test::test_hover' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_hover_after_src_line_change stdout ----
[02:10:20] ---- test::test_hover_after_src_line_change stdout ----
[02:10:20] thread 'test::test_hover_after_src_line_change' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_infer_bin stdout ----
[02:10:20] ---- test::test_infer_bin stdout ----
[02:10:20] thread 'test::test_infer_bin' panicked at 'Assert failed: Could not find `struct is never constructed: `UnusedBin`` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/infer_bin/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_infer_custom_bin stdout ----
[02:10:20] ---- test::test_infer_custom_bin stdout ----
[02:10:20] thread 'test::test_infer_custom_bin' panicked at 'Assert failed: Could not find `struct is never constructed: `UnusedCustomBin`` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/infer_custom_bin/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_infer_lib stdout ----
[02:10:20] ---- test::test_infer_lib stdout ----
[02:10:20] thread 'test::test_infer_lib' panicked at 'Assert failed: Could not find `struct is never constructed: `UnusedLib`` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/infer_lib/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_multiple_binaries stdout ----
[02:10:20] ---- test::test_multiple_binaries stdout ----
[02:10:20] thread 'test::test_multiple_binaries' panicked at 'Assert failed: Could not find `unused variable: `bin_name` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/multiple_bins/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_no_default_features stdout ----
[02:10:20] ---- test::test_no_default_features stdout ----
[02:10:20] thread 'test::test_no_default_features' panicked at 'Assert failed: Could not find `"message":"cannot find struct, variant or union type `Baz` in this scope` in `{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"message":"failed to load source for a dependency on `fnv`\nUnable to update registry `https://github.com/rust-lang/crates.io-index`\nfailed to fetch `https://github.com/rust-lang/crates.io-index`\ncurl error: Could not resolve host: github.com\n; class=Net (12)","range":{"end":{"character":0,"line":9999},"start":{"character":0,"line":0}},"severity":1}],"uri":"file:///checkout/obj/build/rls-test-data/test_data/features/Cargo.toml"}}`', tools/rls/src/test/harness.rs:227:9
[02:10:20] ---- test::test_reformat_with_range stdout ----
[02:10:20] ---- test::test_reformat_with_range stdout ----
[02:10:20] thread 'test::test_reformat_with_range' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_reformat stdout ----
[02:10:20] ---- test::test_reformat stdout ----
[02:10:20] thread 'test::test_reformat' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_rename stdout ----
[02:10:20] ---- test::test_rename stdout ----
[02:10:20] thread 'test::test_rename' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_shutdown stdout ----
[02:10:20] ---- test::test_shutdown stdout ----
[02:10:20] thread 'test::test_shutdown' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_workspace_symbol stdout ----
[02:10:20] ---- test::test_workspace_symbol stdout ----
[02:10:20] thread 'test::test_workspace_symbol' panicked at 'Missing id field', libcore/option.rs:1008:5
[02:10:20] ---- test::test_workspace_symbol_duplicates stdout ----
[02:10:20] ---- test::test_workspace_symbol_duplicates stdout ----
[02:10:20] thread 'test::test_workspace_symbol_duplicates' panicked at 'called `Option::unwrap()` on a `None` value', libcore/option.rs:355:21
[02:10:20] 
[02:10:20] failures:
[02:10:20]     test::lens::test_lens_run
[02:10:20]     test::test_all_targets

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[bors]

⌛ Testing commit 659fcb9 with merge 1c16fa4...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing 1c16fa4 to beta...