[INFO] fetching crate fax 0.1.0...
[INFO] testing fax-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate fax 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fax 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-0/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" "+beta-2021-09-08" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-09-08" "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] f83949b66e6056d94b4904f547e863a587f00437cd50bc194e1de50b73284d31
[INFO] running `Command { std: "docker" "start" "-a" "f83949b66e6056d94b4904f547e863a587f00437cd50bc194e1de50b73284d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f83949b66e6056d94b4904f547e863a587f00437cd50bc194e1de50b73284d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f83949b66e6056d94b4904f547e863a587f00437cd50bc194e1de50b73284d31", kill_on_drop: false }`
[INFO] [stdout] f83949b66e6056d94b4904f547e863a587f00437cd50bc194e1de50b73284d31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faaac52f084d1c89f344f6df2a1a46e7e8c7a5d9e6d09babeec85d4e6cfd7ee2
[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" "faaac52f084d1c89f344f6df2a1a46e7e8c7a5d9e6d09babeec85d4e6cfd7ee2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling fax_derive v0.1.0
[INFO] [stderr]    Compiling fax v0.1.0 (/opt/rustwide/workdir)
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.78s
[INFO] running `Command { std: "docker" "inspect" "faaac52f084d1c89f344f6df2a1a46e7e8c7a5d9e6d09babeec85d4e6cfd7ee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faaac52f084d1c89f344f6df2a1a46e7e8c7a5d9e6d09babeec85d4e6cfd7ee2", kill_on_drop: false }`
[INFO] [stdout] faaac52f084d1c89f344f6df2a1a46e7e8c7a5d9e6d09babeec85d4e6cfd7ee2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--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] e968bcc25582b4690e70e1c3d38d9ce50602513f80874c40a0fea37cb6ad9ae6
[INFO] running `Command { std: "docker" "start" "-a" "e968bcc25582b4690e70e1c3d38d9ce50602513f80874c40a0fea37cb6ad9ae6", kill_on_drop: false }`
[INFO] [stderr]    Compiling fax v0.1.0 (/opt/rustwide/workdir)
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stderr] error: could not compile `fax` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e968bcc25582b4690e70e1c3d38d9ce50602513f80874c40a0fea37cb6ad9ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e968bcc25582b4690e70e1c3d38d9ce50602513f80874c40a0fea37cb6ad9ae6", kill_on_drop: false }`
[INFO] [stdout] e968bcc25582b4690e70e1c3d38d9ce50602513f80874c40a0fea37cb6ad9ae6