[INFO] fetching crate iobuffer 0.2.0...
[INFO] testing iobuffer-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate iobuffer 0.2.0 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate iobuffer 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iobuffer 0.2.0
[INFO] finished tweaking crates.io crate iobuffer 0.2.0
[INFO] tweaked toml for crates.io crate iobuffer 0.2.0 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "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-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fc68c37ed0e65c2a5a323facdb20dc39709869d619d4615e3a6e8a6d75fc0cc
[INFO] running `Command { std: "docker" "start" "-a" "8fc68c37ed0e65c2a5a323facdb20dc39709869d619d4615e3a6e8a6d75fc0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fc68c37ed0e65c2a5a323facdb20dc39709869d619d4615e3a6e8a6d75fc0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc68c37ed0e65c2a5a323facdb20dc39709869d619d4615e3a6e8a6d75fc0cc", kill_on_drop: false }`
[INFO] [stdout] 8fc68c37ed0e65c2a5a323facdb20dc39709869d619d4615e3a6e8a6d75fc0cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e2a23e903b2149fc1f26ac234334f2d0d2e58642ffb6345c6b8e8c7c4f746d9
[INFO] running `Command { std: "docker" "start" "-a" "7e2a23e903b2149fc1f26ac234334f2d0d2e58642ffb6345c6b8e8c7c4f746d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling iobuffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "7e2a23e903b2149fc1f26ac234334f2d0d2e58642ffb6345c6b8e8c7c4f746d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2a23e903b2149fc1f26ac234334f2d0d2e58642ffb6345c6b8e8c7c4f746d9", kill_on_drop: false }`
[INFO] [stdout] 7e2a23e903b2149fc1f26ac234334f2d0d2e58642ffb6345c6b8e8c7c4f746d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aac7d6eb820dd5983164fb04c7370e0da629bf354eeedd94c503db9020edeb00
[INFO] running `Command { std: "docker" "start" "-a" "aac7d6eb820dd5983164fb04c7370e0da629bf354eeedd94c503db9020edeb00", kill_on_drop: false }`
[INFO] [stderr]    Compiling iobuffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "aac7d6eb820dd5983164fb04c7370e0da629bf354eeedd94c503db9020edeb00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac7d6eb820dd5983164fb04c7370e0da629bf354eeedd94c503db9020edeb00", kill_on_drop: false }`
[INFO] [stdout] aac7d6eb820dd5983164fb04c7370e0da629bf354eeedd94c503db9020edeb00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a5816e4bc2b7970b2c73f337e00f645a49df498384e539e27d15ebd401867dd3
[INFO] running `Command { std: "docker" "start" "-a" "a5816e4bc2b7970b2c73f337e00f645a49df498384e539e27d15ebd401867dd3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iobuffer-bc56fc1193aa4f9b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_partial_lines ... ok
[INFO] [stdout] test tests::test_simple_buffer_usage ... 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 iobuffer
[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" "a5816e4bc2b7970b2c73f337e00f645a49df498384e539e27d15ebd401867dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5816e4bc2b7970b2c73f337e00f645a49df498384e539e27d15ebd401867dd3", kill_on_drop: false }`
[INFO] [stdout] a5816e4bc2b7970b2c73f337e00f645a49df498384e539e27d15ebd401867dd3