[INFO] fetching crate fax 0.1.0...
[INFO] checking fax-0.1.0 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate fax 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate fax 0.1.0 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fax 0.1.0
[INFO] finished tweaking crates.io crate fax 0.1.0
[INFO] tweaked toml for crates.io crate fax 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate fax 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fax_derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af8a4a2001cc4507c3b516885057ff4c22e9bda92f17006515742bee358d7183
[INFO] running `Command { std: "docker" "start" "-a" "af8a4a2001cc4507c3b516885057ff4c22e9bda92f17006515742bee358d7183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af8a4a2001cc4507c3b516885057ff4c22e9bda92f17006515742bee358d7183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af8a4a2001cc4507c3b516885057ff4c22e9bda92f17006515742bee358d7183", kill_on_drop: false }`
[INFO] [stdout] af8a4a2001cc4507c3b516885057ff4c22e9bda92f17006515742bee358d7183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ce804d935a4256ed672dc0de8b15f847c829448d3957edc80b96ce27c9d6dd3
[INFO] running `Command { std: "docker" "start" "-a" "0ce804d935a4256ed672dc0de8b15f847c829448d3957edc80b96ce27c9d6dd3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling fax_derive v0.1.0
[INFO] [stderr]     Checking fax v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0423]: expected function, found module `maps::black`
[INFO] [stdout]    --> src/lib.rs:172:16
[INFO] [stdout]     |
[INFO] [stdout] 172 |     assert_eq!(maps::black(&mut bits), Some(42));
[INFO] [stdout]     |                ^^^^^^^^^^^ not a function
[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 E0423`.
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/maps.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fax`
[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] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0ce804d935a4256ed672dc0de8b15f847c829448d3957edc80b96ce27c9d6dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ce804d935a4256ed672dc0de8b15f847c829448d3957edc80b96ce27c9d6dd3", kill_on_drop: false }`
[INFO] [stdout] 0ce804d935a4256ed672dc0de8b15f847c829448d3957edc80b96ce27c9d6dd3