[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] testing rail44/msgpack-rs against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fmsgpack-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rail44/msgpack-rs on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-10/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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-10/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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36c9b41df1454315f7bd42aef793ea2172d4be13ff744ff5e6746318f1032b25
[INFO] running `Command { std: "docker" "start" "-a" "36c9b41df1454315f7bd42aef793ea2172d4be13ff744ff5e6746318f1032b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36c9b41df1454315f7bd42aef793ea2172d4be13ff744ff5e6746318f1032b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36c9b41df1454315f7bd42aef793ea2172d4be13ff744ff5e6746318f1032b25", kill_on_drop: false }`
[INFO] [stdout] 36c9b41df1454315f7bd42aef793ea2172d4be13ff744ff5e6746318f1032b25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ea58d51c3ca3ffae68948305cdb2dd13fc48a9672e10e164be44c47cbb2b7d4
[INFO] running `Command { std: "docker" "start" "-a" "4ea58d51c3ca3ffae68948305cdb2dd13fc48a9672e10e164be44c47cbb2b7d4", 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]    Compiling 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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4ea58d51c3ca3ffae68948305cdb2dd13fc48a9672e10e164be44c47cbb2b7d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ea58d51c3ca3ffae68948305cdb2dd13fc48a9672e10e164be44c47cbb2b7d4", kill_on_drop: false }`
[INFO] [stdout] 4ea58d51c3ca3ffae68948305cdb2dd13fc48a9672e10e164be44c47cbb2b7d4