[INFO] updating cached repository https://github.com/swkfn/rust-slack-bot-sample
[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] e3fb8e95884e8a8e3e6c802107be566145023128
[INFO] checking swkfn/rust-slack-bot-sample against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswkfn%2Frust-slack-bot-sample" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/swkfn/rust-slack-bot-sample on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/swkfn/rust-slack-bot-sample
[INFO] finished tweaking git repo https://github.com/swkfn/rust-slack-bot-sample
[INFO] tweaked toml for git repo https://github.com/swkfn/rust-slack-bot-sample written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/swkfn/rust-slack-bot-sample already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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] b5b4eebf561ff111dc43dee5862c758395ac63c7242d4d8c8dc24b2c10f19a3a
[INFO] running `"docker" "start" "-a" "b5b4eebf561ff111dc43dee5862c758395ac63c7242d4d8c8dc24b2c10f19a3a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking openssl-sys v0.9.47
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking openssl v0.10.23
[INFO] [stderr]     Checking async-compression v0.3.1
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.93
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking hyper v0.13.2
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.3
[INFO] [stderr]     Checking slack_api v0.22.0
[INFO] [stderr]     Checking rust_slack_bot_sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] running `"docker" "inspect" "b5b4eebf561ff111dc43dee5862c758395ac63c7242d4d8c8dc24b2c10f19a3a"`
[INFO] running `"docker" "rm" "-f" "b5b4eebf561ff111dc43dee5862c758395ac63c7242d4d8c8dc24b2c10f19a3a"`
[INFO] [stdout] b5b4eebf561ff111dc43dee5862c758395ac63c7242d4d8c8dc24b2c10f19a3a