[INFO] fetching crate trailing_cell 0.3.0...
[INFO] extracting crate trailing_cell 0.3.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/trailing_cell/0.3.0
[INFO] extracting crate trailing_cell 0.3.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/trailing_cell/0.3.0
[INFO] validating manifest of trailing_cell-0.3.0 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 trailing_cell-0.3.0 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 trailing_cell-0.3.0
[INFO] finished frobbing trailing_cell-0.3.0
[INFO] frobbed toml for trailing_cell-0.3.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/trailing_cell/0.3.0/Cargo.toml
[INFO] started frobbing trailing_cell-0.3.0
[INFO] finished frobbing trailing_cell-0.3.0
[INFO] frobbed toml for trailing_cell-0.3.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/trailing_cell/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 trailing_cell-0.3.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/trailing_cell/0.3.0:/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] d32c6e1f88a33daa95868e652f1df559974c5acc044f8c33978101c75814570f
[INFO] running `"docker" "start" "-a" "d32c6e1f88a33daa95868e652f1df559974c5acc044f8c33978101c75814570f"`
[INFO] [stderr]    Compiling atomic-option v0.1.2
[INFO] [stderr]    Compiling bus v1.4.1
[INFO] [stderr]    Compiling trailing_cell v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "d32c6e1f88a33daa95868e652f1df559974c5acc044f8c33978101c75814570f"`
[INFO] running `"docker" "rm" "-f" "d32c6e1f88a33daa95868e652f1df559974c5acc044f8c33978101c75814570f"`
[INFO] [stdout] d32c6e1f88a33daa95868e652f1df559974c5acc044f8c33978101c75814570f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/trailing_cell/0.3.0:/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] 96e26043a327a0c6f2c5e31b8521e0d0bd0c4bc61a76051cc4fe2103eaef34ed
[INFO] running `"docker" "start" "-a" "96e26043a327a0c6f2c5e31b8521e0d0bd0c4bc61a76051cc4fe2103eaef34ed"`
[INFO] [stderr]    Compiling trailing_cell v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/tests.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         h.join().is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/tests.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     h1.join().is_ok();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/tests.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     h2.join().is_ok();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `"docker" "inspect" "96e26043a327a0c6f2c5e31b8521e0d0bd0c4bc61a76051cc4fe2103eaef34ed"`
[INFO] running `"docker" "rm" "-f" "96e26043a327a0c6f2c5e31b8521e0d0bd0c4bc61a76051cc4fe2103eaef34ed"`
[INFO] [stdout] 96e26043a327a0c6f2c5e31b8521e0d0bd0c4bc61a76051cc4fe2103eaef34ed
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/trailing_cell/0.3.0:/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] da408f6464dd8bfd1272cea3fd86ebca35782c71724f24f79ae913e93d63c84e
[INFO] running `"docker" "start" "-a" "da408f6464dd8bfd1272cea3fd86ebca35782c71724f24f79ae913e93d63c84e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/trailing_cell-edf3cdfecd1a5e95
[INFO] [stdout] test tests::deref ... ok
[INFO] [stdout] test tests::wrapping_unwrapping ... ok
[INFO] [stdout] test tests::deref_mut ... ok
[INFO] [stdout] test tests::staleness ... ok
[INFO] [stdout] test tests::limited_sync ... ok
[INFO] [stdout] test tests::w1_r1_multithreaded ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trailing_cell
[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" "da408f6464dd8bfd1272cea3fd86ebca35782c71724f24f79ae913e93d63c84e"`
[INFO] running `"docker" "rm" "-f" "da408f6464dd8bfd1272cea3fd86ebca35782c71724f24f79ae913e93d63c84e"`
[INFO] [stdout] da408f6464dd8bfd1272cea3fd86ebca35782c71724f24f79ae913e93d63c84e