[INFO] fetching crate synchronized-writer 1.1.11...
[INFO] testing synchronized-writer-1.1.11 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate synchronized-writer 1.1.11 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate synchronized-writer 1.1.11 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate synchronized-writer 1.1.11
[INFO] finished tweaking crates.io crate synchronized-writer 1.1.11
[INFO] tweaked toml for crates.io crate synchronized-writer 1.1.11 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7a326e17c21cf7111bd41d08bf2872ef91cbfd17699f677a328c993d10bbb6c
[INFO] running `Command { std: "docker" "start" "-a" "a7a326e17c21cf7111bd41d08bf2872ef91cbfd17699f677a328c993d10bbb6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7a326e17c21cf7111bd41d08bf2872ef91cbfd17699f677a328c993d10bbb6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a326e17c21cf7111bd41d08bf2872ef91cbfd17699f677a328c993d10bbb6c", kill_on_drop: false }`
[INFO] [stdout] a7a326e17c21cf7111bd41d08bf2872ef91cbfd17699f677a328c993d10bbb6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec923faecafa2a9c2c4fd6195febba7e796c1d78e49a392bb02580fd1dbf3169
[INFO] running `Command { std: "docker" "start" "-a" "ec923faecafa2a9c2c4fd6195febba7e796c1d78e49a392bb02580fd1dbf3169", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling synchronized-writer v1.1.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "ec923faecafa2a9c2c4fd6195febba7e796c1d78e49a392bb02580fd1dbf3169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec923faecafa2a9c2c4fd6195febba7e796c1d78e49a392bb02580fd1dbf3169", kill_on_drop: false }`
[INFO] [stdout] ec923faecafa2a9c2c4fd6195febba7e796c1d78e49a392bb02580fd1dbf3169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6d5f52832ccb139d3302ec7618cc03bbf0cc15b8c22348ad7edf440c8265619
[INFO] running `Command { std: "docker" "start" "-a" "e6d5f52832ccb139d3302ec7618cc03bbf0cc15b8c22348ad7edf440c8265619", kill_on_drop: false }`
[INFO] [stderr]    Compiling synchronized-writer v1.1.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/synchronized_writer-d627881ff16870fe)
[INFO] running `Command { std: "docker" "inspect" "e6d5f52832ccb139d3302ec7618cc03bbf0cc15b8c22348ad7edf440c8265619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d5f52832ccb139d3302ec7618cc03bbf0cc15b8c22348ad7edf440c8265619", kill_on_drop: false }`
[INFO] [stdout] e6d5f52832ccb139d3302ec7618cc03bbf0cc15b8c22348ad7edf440c8265619
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 050e9e045730ca78d1c90f663fad6f3c6b5d2d102a2728ef2a39395f4872ca57
[INFO] running `Command { std: "docker" "start" "-a" "050e9e045730ca78d1c90f663fad6f3c6b5d2d102a2728ef2a39395f4872ca57", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/synchronized_writer-d627881ff16870fe)
[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 38) ... 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 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "050e9e045730ca78d1c90f663fad6f3c6b5d2d102a2728ef2a39395f4872ca57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "050e9e045730ca78d1c90f663fad6f3c6b5d2d102a2728ef2a39395f4872ca57", kill_on_drop: false }`
[INFO] [stdout] 050e9e045730ca78d1c90f663fad6f3c6b5d2d102a2728ef2a39395f4872ca57