[INFO] fetching crate proc-lock-api 0.4.0...
[INFO] testing proc-lock-api-0.4.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate proc-lock-api 0.4.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate proc-lock-api 0.4.0
[INFO] finished tweaking crates.io crate proc-lock-api 0.4.0
[INFO] tweaked toml for crates.io crate proc-lock-api 0.4.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proc-lock-api 0.4.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spectral v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be5eed05b649c4ae50f5c0bc2f60db4014e9ed1b5293c3b945062d4d4cd0b673
[INFO] running `Command { std: "docker" "start" "-a" "be5eed05b649c4ae50f5c0bc2f60db4014e9ed1b5293c3b945062d4d4cd0b673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be5eed05b649c4ae50f5c0bc2f60db4014e9ed1b5293c3b945062d4d4cd0b673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be5eed05b649c4ae50f5c0bc2f60db4014e9ed1b5293c3b945062d4d4cd0b673", kill_on_drop: false }`
[INFO] [stdout] be5eed05b649c4ae50f5c0bc2f60db4014e9ed1b5293c3b945062d4d4cd0b673
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbb834aed5367db6bb2a0dcfd044bfb58eb7831cfa9e65917f6ccdd953854e7e
[INFO] running `Command { std: "docker" "start" "-a" "bbb834aed5367db6bb2a0dcfd044bfb58eb7831cfa9e65917f6ccdd953854e7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling proc-lock-api v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs2::FileExt`
[INFO] [stdout]  --> src/lock_guard.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fs2::FileExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "bbb834aed5367db6bb2a0dcfd044bfb58eb7831cfa9e65917f6ccdd953854e7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbb834aed5367db6bb2a0dcfd044bfb58eb7831cfa9e65917f6ccdd953854e7e", kill_on_drop: false }`
[INFO] [stdout] bbb834aed5367db6bb2a0dcfd044bfb58eb7831cfa9e65917f6ccdd953854e7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cf95a39add7e9d3eadf18380878f10e1878c3c32afb2fbb6add703b359d245d
[INFO] running `Command { std: "docker" "start" "-a" "0cf95a39add7e9d3eadf18380878f10e1878c3c32afb2fbb6add703b359d245d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.1.45
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling num-complex v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.43
[INFO] [stdout] warning: unused import: `fs2::FileExt`
[INFO] [stdout]  --> src/lock_guard.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fs2::FileExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num v0.1.43
[INFO] [stderr]    Compiling spectral v0.6.0
[INFO] [stderr]    Compiling proc-lock-api v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs2::FileExt`
[INFO] [stdout]  --> src/lock_guard.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fs2::FileExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "0cf95a39add7e9d3eadf18380878f10e1878c3c32afb2fbb6add703b359d245d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cf95a39add7e9d3eadf18380878f10e1878c3c32afb2fbb6add703b359d245d", kill_on_drop: false }`
[INFO] [stdout] 0cf95a39add7e9d3eadf18380878f10e1878c3c32afb2fbb6add703b359d245d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e7b5c53007c1550a2a19469bbb20191f42f2d7f714517bf154974fa819a3e2a1
[INFO] running `Command { std: "docker" "start" "-a" "e7b5c53007c1550a2a19469bbb20191f42f2d7f714517bf154974fa819a3e2a1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `fs2::FileExt`
[INFO] [stderr]  --> src/lock_guard.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use fs2::FileExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `proc-lock-api` (lib) generated 1 warning
[INFO] [stderr] warning: `proc-lock-api` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/proc_lock_api-103124ff55992047)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::should_unlock_guard_on_drop ... ok
[INFO] [stdout] test tests::should_return_err_when_file_is_already_locked ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests proc_lock_api
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e7b5c53007c1550a2a19469bbb20191f42f2d7f714517bf154974fa819a3e2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b5c53007c1550a2a19469bbb20191f42f2d7f714517bf154974fa819a3e2a1", kill_on_drop: false }`
[INFO] [stdout] e7b5c53007c1550a2a19469bbb20191f42f2d7f714517bf154974fa819a3e2a1