[INFO] fetching crate synchronized-writer 1.1.10...
[INFO] testing synchronized-writer-1.1.10 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate synchronized-writer 1.1.10 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate synchronized-writer 1.1.10 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-105/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39367f0d536b354bd094558a98aba24ae9e19da52a8254664e3fcc7a7d2cd228
[INFO] running `Command { std: "docker" "start" "-a" "39367f0d536b354bd094558a98aba24ae9e19da52a8254664e3fcc7a7d2cd228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39367f0d536b354bd094558a98aba24ae9e19da52a8254664e3fcc7a7d2cd228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39367f0d536b354bd094558a98aba24ae9e19da52a8254664e3fcc7a7d2cd228", kill_on_drop: false }`
[INFO] [stdout] 39367f0d536b354bd094558a98aba24ae9e19da52a8254664e3fcc7a7d2cd228
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ae27538adf9ae936c5f539a3510fdae3a3fa1ebde862cd08451b558cb43a4d6
[INFO] running `Command { std: "docker" "start" "-a" "5ae27538adf9ae936c5f539a3510fdae3a3fa1ebde862cd08451b558cb43a4d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling synchronized-writer v1.1.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "5ae27538adf9ae936c5f539a3510fdae3a3fa1ebde862cd08451b558cb43a4d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae27538adf9ae936c5f539a3510fdae3a3fa1ebde862cd08451b558cb43a4d6", kill_on_drop: false }`
[INFO] [stdout] 5ae27538adf9ae936c5f539a3510fdae3a3fa1ebde862cd08451b558cb43a4d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 999fa0883d8cf71f7bc13d05bd5d6def759d573375d17c33885e0a809bf89ed7
[INFO] running `Command { std: "docker" "start" "-a" "999fa0883d8cf71f7bc13d05bd5d6def759d573375d17c33885e0a809bf89ed7", kill_on_drop: false }`
[INFO] [stderr]    Compiling synchronized-writer v1.1.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "999fa0883d8cf71f7bc13d05bd5d6def759d573375d17c33885e0a809bf89ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999fa0883d8cf71f7bc13d05bd5d6def759d573375d17c33885e0a809bf89ed7", kill_on_drop: false }`
[INFO] [stdout] 999fa0883d8cf71f7bc13d05bd5d6def759d573375d17c33885e0a809bf89ed7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 40ecceb54bcad4dac0d2c957f2ac8427ed4eab9f0633016e9d48826951d2a471
[INFO] running `Command { std: "docker" "start" "-a" "40ecceb54bcad4dac0d2c957f2ac8427ed4eab9f0633016e9d48826951d2a471", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/synchronized_writer-196349d609468fd7)
[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 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "40ecceb54bcad4dac0d2c957f2ac8427ed4eab9f0633016e9d48826951d2a471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ecceb54bcad4dac0d2c957f2ac8427ed4eab9f0633016e9d48826951d2a471", kill_on_drop: false }`
[INFO] [stdout] 40ecceb54bcad4dac0d2c957f2ac8427ed4eab9f0633016e9d48826951d2a471