[INFO] updating cached repository https://github.com/cookie-s/very-simple-slack-rtm-client-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cbb82bf95a2cd8b757250dffe538e11476c3ab2b
[INFO] checking cookie-s/very-simple-slack-rtm-client-rs against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcookie-s%2Fvery-simple-slack-rtm-client-rs" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cookie-s/very-simple-slack-rtm-client-rs on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cookie-s/very-simple-slack-rtm-client-rs
[INFO] finished tweaking git repo https://github.com/cookie-s/very-simple-slack-rtm-client-rs
[INFO] tweaked toml for git repo https://github.com/cookie-s/very-simple-slack-rtm-client-rs written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/cookie-s/very-simple-slack-rtm-client-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a31958f41dde16a6e6f89131070c5f28e1ee5385cd8fedcd7bd0154c3eff354e
[INFO] running `"docker" "start" "-a" "a31958f41dde16a6e6f89131070c5f28e1ee5385cd8fedcd7bd0154c3eff354e"`
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]     Checking want v0.0.4
[INFO] [stderr]     Checking input_buffer v0.1.1
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking serde-hjson v0.8.1
[INFO] [stderr]     Checking native-tls v0.1.5
[INFO] [stderr]     Checking tokio-tls v0.1.4
[INFO] [stderr]     Checking tungstenite v0.5.4
[INFO] [stderr]     Checking config v0.9.0
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking hyper-tls v0.1.3
[INFO] [stderr]     Checking reqwest v0.8.6
[INFO] [stderr]     Checking slack_api v0.20.0 (https://github.com/cookie-s/slack-rs-api#b43af37c)
[INFO] [stderr]     Checking slack v0.21.0
[INFO] [stderr]     Checking very-simple-slack-rtm-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `"docker" "inspect" "a31958f41dde16a6e6f89131070c5f28e1ee5385cd8fedcd7bd0154c3eff354e"`
[INFO] running `"docker" "rm" "-f" "a31958f41dde16a6e6f89131070c5f28e1ee5385cd8fedcd7bd0154c3eff354e"`
[INFO] [stdout] a31958f41dde16a6e6f89131070c5f28e1ee5385cd8fedcd7bd0154c3eff354e