[INFO] cloning repository https://github.com/iamdustan/slack-imposter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamdustan/slack-imposter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamdustan%2Fslack-imposter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamdustan%2Fslack-imposter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdb88ef3c33cbd19e339770e59b6ceb9614c7181
[INFO] checking iamdustan/slack-imposter against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamdustan%2Fslack-imposter" "/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/iamdustan/slack-imposter on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamdustan/slack-imposter
[INFO] finished tweaking git repo https://github.com/iamdustan/slack-imposter
[INFO] tweaked toml for git repo https://github.com/iamdustan/slack-imposter written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/iamdustan/slack-imposter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 383386e666d8e0a0428486c8940776b9c05cb2c06b37d492f98eb5d8e7c2f582
[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" "383386e666d8e0a0428486c8940776b9c05cb2c06b37d492f98eb5d8e7c2f582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "383386e666d8e0a0428486c8940776b9c05cb2c06b37d492f98eb5d8e7c2f582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "383386e666d8e0a0428486c8940776b9c05cb2c06b37d492f98eb5d8e7c2f582", kill_on_drop: false }`
[INFO] [stdout] 383386e666d8e0a0428486c8940776b9c05cb2c06b37d492f98eb5d8e7c2f582
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d0ae572b238710df6b53a93241c199b20464b54fcdc43a8ce6e81fa3297f353
[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" "3d0ae572b238710df6b53a93241c199b20464b54fcdc43a8ce6e81fa3297f353", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gcc v0.3.35
[INFO] [stderr]     Checking yaml-rust v0.3.3
[INFO] [stderr]     Checking unicode-width v0.1.3
[INFO] [stderr]     Checking strsim v0.5.1
[INFO] [stderr]     Checking unicode-segmentation v0.1.2
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stdout]     |
[INFO] [stdout] 147 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap v2.13.0
[INFO] [stderr]    Compiling libz-sys v1.0.6
[INFO] [stderr]    Compiling curl-sys v0.2.3
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3d0ae572b238710df6b53a93241c199b20464b54fcdc43a8ce6e81fa3297f353", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d0ae572b238710df6b53a93241c199b20464b54fcdc43a8ce6e81fa3297f353", kill_on_drop: false }`
[INFO] [stdout] 3d0ae572b238710df6b53a93241c199b20464b54fcdc43a8ce6e81fa3297f353