[INFO] cloning repository ricardopieper/rust-concurrency-tests
[INFO] running `"git" "clone" "--bare" "git://github.com/ricardopieper/rust-concurrency-tests.git" "work/cache/sources/gh/ricardopieper/rust-concurrency-tests"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/ricardopieper/rust-concurrency-tests'...
[INFO] running `"git" "clone" "work/cache/sources/gh/ricardopieper/rust-concurrency-tests" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/ricardopieper/rust-concurrency-tests"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/ricardopieper/rust-concurrency-tests'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ricardopieper/rust-concurrency-tests" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/ricardopieper/rust-concurrency-tests"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/ricardopieper/rust-concurrency-tests'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf5d96403af158bfc1ad58a705530c2211efde87
[INFO] sha for GitHub repo ricardopieper/rust-concurrency-tests: bf5d96403af158bfc1ad58a705530c2211efde87
[INFO] validating manifest of ricardopieper/rust-concurrency-tests on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ricardopieper/rust-concurrency-tests on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ricardopieper/rust-concurrency-tests
[INFO] finished frobbing ricardopieper/rust-concurrency-tests
[INFO] frobbed toml for ricardopieper/rust-concurrency-tests written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/ricardopieper/rust-concurrency-tests/Cargo.toml
[INFO] started frobbing ricardopieper/rust-concurrency-tests
[INFO] finished frobbing ricardopieper/rust-concurrency-tests
[INFO] frobbed toml for ricardopieper/rust-concurrency-tests written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/ricardopieper/rust-concurrency-tests/Cargo.toml
[INFO] crate ricardopieper/rust-concurrency-tests already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ricardopieper/rust-concurrency-tests against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/ricardopieper/rust-concurrency-tests:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] c48edc1c80e2b5efd87a3389dd0531ff91934f4b5581e3d55492fe8e99573ac0
[INFO] running `"docker" "start" "-a" "c48edc1c80e2b5efd87a3389dd0531ff91934f4b5581e3d55492fe8e99573ac0"`
[INFO] [stderr]    Compiling rust-concurrency-tests v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `"docker" "inspect" "c48edc1c80e2b5efd87a3389dd0531ff91934f4b5581e3d55492fe8e99573ac0"`
[INFO] running `"docker" "rm" "-f" "c48edc1c80e2b5efd87a3389dd0531ff91934f4b5581e3d55492fe8e99573ac0"`
[INFO] [stdout] c48edc1c80e2b5efd87a3389dd0531ff91934f4b5581e3d55492fe8e99573ac0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/ricardopieper/rust-concurrency-tests:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2ce128016b1599894b59e8388fe1e09e1087e57b57ae37d4ce4a8480e399c14a
[INFO] running `"docker" "start" "-a" "2ce128016b1599894b59e8388fe1e09e1087e57b57ae37d4ce4a8480e399c14a"`
[INFO] [stderr]    Compiling rust-concurrency-tests v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/linked_set_tests.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/linked_set_tests.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/linked_set_tests.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/linked_set_tests.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/linked_set_tests.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/linked_set_tests.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/linked_set_tests.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let mut set = CoarseLockLinkedSet::<i32>::new();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `"docker" "inspect" "2ce128016b1599894b59e8388fe1e09e1087e57b57ae37d4ce4a8480e399c14a"`
[INFO] running `"docker" "rm" "-f" "2ce128016b1599894b59e8388fe1e09e1087e57b57ae37d4ce4a8480e399c14a"`
[INFO] [stdout] 2ce128016b1599894b59e8388fe1e09e1087e57b57ae37d4ce4a8480e399c14a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/ricardopieper/rust-concurrency-tests:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 9c9f4f62d3f605743323a9f6815acbd4bbe78c09a947d146c850ea9e75f4245a
[INFO] running `"docker" "start" "-a" "9c9f4f62d3f605743323a9f6815acbd4bbe78c09a947d146c850ea9e75f4245a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_concurrency_tests-96a27370772a02da
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_concurrency_tests-3ab38b26cc1e64ac
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/linked_set_tests-f1ea9722502fec76
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test adds_multiple_items_and_removes_everything_back_to_front ... ok
[INFO] [stdout] test adds_item ... ok
[INFO] [stdout] test adds_and_removes_root ... ok
[INFO] [stdout] test adding_same_item_has_no_effect ... ok
[INFO] [stdout] test adds_multiple_items_and_removes_everything_front_to_back ... ok
[INFO] [stdout] test adds_root_and_fails_to_remove ... ok
[INFO] [stdout] test adds_multiple_items_and_removes_everything_no_particular_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust-concurrency-tests
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9c9f4f62d3f605743323a9f6815acbd4bbe78c09a947d146c850ea9e75f4245a"`
[INFO] running `"docker" "rm" "-f" "9c9f4f62d3f605743323a9f6815acbd4bbe78c09a947d146c850ea9e75f4245a"`
[INFO] [stdout] 9c9f4f62d3f605743323a9f6815acbd4bbe78c09a947d146c850ea9e75f4245a