[INFO] cloning repository https://github.com/rail44/msgpack-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rail44/msgpack-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fmsgpack-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fmsgpack-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0bceb593ed6dc7ab227a315c689755bccebbb028
[INFO] checking rail44/msgpack-rs against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fmsgpack-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rail44/msgpack-rs on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rail44/msgpack-rs
[INFO] finished tweaking git repo https://github.com/rail44/msgpack-rs
[INFO] tweaked toml for git repo https://github.com/rail44/msgpack-rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/rail44/msgpack-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-14/source/src/msgpack.rs` was erroneously implicitly accepted for library `msgpack`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33bf5f34cb5df172e779cb718f9d25de4745cd989bf0040c254461f309e874f9
[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" "33bf5f34cb5df172e779cb718f9d25de4745cd989bf0040c254461f309e874f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33bf5f34cb5df172e779cb718f9d25de4745cd989bf0040c254461f309e874f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33bf5f34cb5df172e779cb718f9d25de4745cd989bf0040c254461f309e874f9", kill_on_drop: false }`
[INFO] [stdout] 33bf5f34cb5df172e779cb718f9d25de4745cd989bf0040c254461f309e874f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6951c41914b6a2e9e16acc166e6ca751189b55128f6ad99c2a6b5c20bc861e31
[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" "6951c41914b6a2e9e16acc166e6ca751189b55128f6ad99c2a6b5c20bc861e31", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/msgpack.rs` was erroneously implicitly accepted for library `msgpack`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr]     Checking msgpack v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `serialize`
[INFO] [stdout]  --> src/msgpack.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate serialize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msgpack`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `serialize`
[INFO] [stdout]  --> src/msgpack.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate serialize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6951c41914b6a2e9e16acc166e6ca751189b55128f6ad99c2a6b5c20bc861e31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6951c41914b6a2e9e16acc166e6ca751189b55128f6ad99c2a6b5c20bc861e31", kill_on_drop: false }`
[INFO] [stdout] 6951c41914b6a2e9e16acc166e6ca751189b55128f6ad99c2a6b5c20bc861e31