[INFO] fetching crate synchronized-writer 1.1.10...
[INFO] testing synchronized-writer-1.1.10 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate synchronized-writer 1.1.10 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate synchronized-writer 1.1.10 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate synchronized-writer 1.1.10
[INFO] finished tweaking crates.io crate synchronized-writer 1.1.10
[INFO] tweaked toml for crates.io crate synchronized-writer 1.1.10 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7f6ebcc52c76c0dd3189298f9f84ca8aff5ec3dfaa974f8ed2558d8be7550f5
[INFO] running `Command { std: "docker" "start" "-a" "b7f6ebcc52c76c0dd3189298f9f84ca8aff5ec3dfaa974f8ed2558d8be7550f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7f6ebcc52c76c0dd3189298f9f84ca8aff5ec3dfaa974f8ed2558d8be7550f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7f6ebcc52c76c0dd3189298f9f84ca8aff5ec3dfaa974f8ed2558d8be7550f5", kill_on_drop: false }`
[INFO] [stdout] b7f6ebcc52c76c0dd3189298f9f84ca8aff5ec3dfaa974f8ed2558d8be7550f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f1f2c3d79e68666fdf9b613c92efbb838955e3b67582ec6424967228304770f
[INFO] running `Command { std: "docker" "start" "-a" "3f1f2c3d79e68666fdf9b613c92efbb838955e3b67582ec6424967228304770f", kill_on_drop: false }`
[INFO] [stderr]    Compiling synchronized-writer v1.1.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "3f1f2c3d79e68666fdf9b613c92efbb838955e3b67582ec6424967228304770f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1f2c3d79e68666fdf9b613c92efbb838955e3b67582ec6424967228304770f", kill_on_drop: false }`
[INFO] [stdout] 3f1f2c3d79e68666fdf9b613c92efbb838955e3b67582ec6424967228304770f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6d2e028d2f7d5c5592508a553e2dcd78572e156dba7c54e40fb1573c8a1733d
[INFO] running `Command { std: "docker" "start" "-a" "a6d2e028d2f7d5c5592508a553e2dcd78572e156dba7c54e40fb1573c8a1733d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling synchronized-writer v1.1.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "a6d2e028d2f7d5c5592508a553e2dcd78572e156dba7c54e40fb1573c8a1733d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6d2e028d2f7d5c5592508a553e2dcd78572e156dba7c54e40fb1573c8a1733d", kill_on_drop: false }`
[INFO] [stdout] a6d2e028d2f7d5c5592508a553e2dcd78572e156dba7c54e40fb1573c8a1733d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e32a5b188bf108b28f59324135664eb371dc572fa9218f5a98b72b3270eb31a4
[INFO] running `Command { std: "docker" "start" "-a" "e32a5b188bf108b28f59324135664eb371dc572fa9218f5a98b72b3270eb31a4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/synchronized_writer-3cf1b9d12c6cbfaf)
[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] [stderr]    Doc-tests synchronized-writer
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 40) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e32a5b188bf108b28f59324135664eb371dc572fa9218f5a98b72b3270eb31a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e32a5b188bf108b28f59324135664eb371dc572fa9218f5a98b72b3270eb31a4", kill_on_drop: false }`
[INFO] [stdout] e32a5b188bf108b28f59324135664eb371dc572fa9218f5a98b72b3270eb31a4