[INFO] fetching crate return_if_ok 0.1.0...
[INFO] testing return_if_ok-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate return_if_ok 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate return_if_ok 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate return_if_ok 0.1.0
[INFO] finished tweaking crates.io crate return_if_ok 0.1.0
[INFO] tweaked toml for crates.io crate return_if_ok 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] c12a8ac67b6b6c44ac55b8e720106c09f91ff32e2a06b06827f902adb51b3ffa
[INFO] running `Command { std: "docker" "start" "-a" "c12a8ac67b6b6c44ac55b8e720106c09f91ff32e2a06b06827f902adb51b3ffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c12a8ac67b6b6c44ac55b8e720106c09f91ff32e2a06b06827f902adb51b3ffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c12a8ac67b6b6c44ac55b8e720106c09f91ff32e2a06b06827f902adb51b3ffa", kill_on_drop: false }`
[INFO] [stdout] c12a8ac67b6b6c44ac55b8e720106c09f91ff32e2a06b06827f902adb51b3ffa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e9d0710dbbc51a9312762fb2751ddb4dc4aa26e6ad91165a8e2808de02b13df
[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" "7e9d0710dbbc51a9312762fb2751ddb4dc4aa26e6ad91165a8e2808de02b13df", kill_on_drop: false }`
[INFO] [stderr]    Compiling return_if_ok v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "7e9d0710dbbc51a9312762fb2751ddb4dc4aa26e6ad91165a8e2808de02b13df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e9d0710dbbc51a9312762fb2751ddb4dc4aa26e6ad91165a8e2808de02b13df", kill_on_drop: false }`
[INFO] [stdout] 7e9d0710dbbc51a9312762fb2751ddb4dc4aa26e6ad91165a8e2808de02b13df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3856a421478ca628a0da51e133681bb9db2b7f1c1df8f811efb57e2d39ac702e
[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" "3856a421478ca628a0da51e133681bb9db2b7f1c1df8f811efb57e2d39ac702e", kill_on_drop: false }`
[INFO] [stderr]    Compiling return_if_ok v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "3856a421478ca628a0da51e133681bb9db2b7f1c1df8f811efb57e2d39ac702e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3856a421478ca628a0da51e133681bb9db2b7f1c1df8f811efb57e2d39ac702e", kill_on_drop: false }`
[INFO] [stdout] 3856a421478ca628a0da51e133681bb9db2b7f1c1df8f811efb57e2d39ac702e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 97f3df44c8d34ecdaf963c6d4645acd031898bf63d4fe1c4005e1754f51c443e
[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" "97f3df44c8d34ecdaf963c6d4645acd031898bf63d4fe1c4005e1754f51c443e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/return_if_ok-d2967fea2e01a9fd
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "97f3df44c8d34ecdaf963c6d4645acd031898bf63d4fe1c4005e1754f51c443e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f3df44c8d34ecdaf963c6d4645acd031898bf63d4fe1c4005e1754f51c443e", kill_on_drop: false }`
[INFO] [stdout] 97f3df44c8d34ecdaf963c6d4645acd031898bf63d4fe1c4005e1754f51c443e