[INFO] fetching crate y4m 0.7.0...
[INFO] testing y4m-0.7.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate y4m 0.7.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate y4m 0.7.0 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 y4m 0.7.0
[INFO] finished tweaking crates.io crate y4m 0.7.0
[INFO] tweaked toml for crates.io crate y4m 0.7.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate y4m 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 130e518afe05f7a591605b154575308c4cf2983bc00c7841de7afc1f2df79460
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "130e518afe05f7a591605b154575308c4cf2983bc00c7841de7afc1f2df79460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "130e518afe05f7a591605b154575308c4cf2983bc00c7841de7afc1f2df79460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "130e518afe05f7a591605b154575308c4cf2983bc00c7841de7afc1f2df79460", kill_on_drop: false }`
[INFO] [stdout] 130e518afe05f7a591605b154575308c4cf2983bc00c7841de7afc1f2df79460
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] be2bc875ed0bd0d3285d99e1ef0ffba755f6abb036c09fb5865f894a6a35c6f8
[INFO] running `Command { std: "docker" "start" "-a" "be2bc875ed0bd0d3285d99e1ef0ffba755f6abb036c09fb5865f894a6a35c6f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling y4m v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "be2bc875ed0bd0d3285d99e1ef0ffba755f6abb036c09fb5865f894a6a35c6f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be2bc875ed0bd0d3285d99e1ef0ffba755f6abb036c09fb5865f894a6a35c6f8", kill_on_drop: false }`
[INFO] [stdout] be2bc875ed0bd0d3285d99e1ef0ffba755f6abb036c09fb5865f894a6a35c6f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 9d96bbe2b911a67a7f058fff14bd135e2a2dc5cd10b18f76cb0ed3203d9fa9ee
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d96bbe2b911a67a7f058fff14bd135e2a2dc5cd10b18f76cb0ed3203d9fa9ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling resize v0.4.3
[INFO] [stderr]    Compiling y4m v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `Command { std: "docker" "inspect" "9d96bbe2b911a67a7f058fff14bd135e2a2dc5cd10b18f76cb0ed3203d9fa9ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d96bbe2b911a67a7f058fff14bd135e2a2dc5cd10b18f76cb0ed3203d9fa9ee", kill_on_drop: false }`
[INFO] [stdout] 9d96bbe2b911a67a7f058fff14bd135e2a2dc5cd10b18f76cb0ed3203d9fa9ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] f3a0ede63c877492356cc1c69a53328cb506c94e821831ea837975166cbbf554
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f3a0ede63c877492356cc1c69a53328cb506c94e821831ea837975166cbbf554", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/y4m-381cbae90848bdfd)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests y4m
[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] [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" "f3a0ede63c877492356cc1c69a53328cb506c94e821831ea837975166cbbf554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a0ede63c877492356cc1c69a53328cb506c94e821831ea837975166cbbf554", kill_on_drop: false }`
[INFO] [stdout] f3a0ede63c877492356cc1c69a53328cb506c94e821831ea837975166cbbf554