[INFO] updating cached repository https://github.com/cesare/rust_slack_client
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 6cc3488df262e171bb813216403502d05f109a54
[INFO] checking cesare/rust_slack_client against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcesare%2Frust_slack_client" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cesare/rust_slack_client on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cesare/rust_slack_client
[INFO] finished tweaking git repo https://github.com/cesare/rust_slack_client
[INFO] tweaked toml for git repo https://github.com/cesare/rust_slack_client written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/cesare/rust_slack_client already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45ac4f7c207b008050fc3f5ea53ab2db70d099210ad1492664d180c5924ea7bf
[INFO] running `"docker" "start" "-a" "45ac4f7c207b008050fc3f5ea53ab2db70d099210ad1492664d180c5924ea7bf"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.17
[INFO] [stderr]    Compiling serde v1.0.76
[INFO] [stderr]     Checking tokio-executor v0.1.4
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
[INFO] [stderr]     Checking tokio-io v0.1.8
[INFO] [stderr]     Checking http v0.1.10
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking tokio-reactor v0.1.5
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]     Checking tokio v0.1.8
[INFO] [stderr]     Checking hyper v0.12.9
[INFO] [stderr]    Compiling serde_derive v1.0.76
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stderr]     Checking hyper-tls v0.3.0
[INFO] [stderr]     Checking slack_client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] running `"docker" "inspect" "45ac4f7c207b008050fc3f5ea53ab2db70d099210ad1492664d180c5924ea7bf"`
[INFO] running `"docker" "rm" "-f" "45ac4f7c207b008050fc3f5ea53ab2db70d099210ad1492664d180c5924ea7bf"`
[INFO] [stdout] 45ac4f7c207b008050fc3f5ea53ab2db70d099210ad1492664d180c5924ea7bf