[INFO] cloning repository https://github.com/tkondrashov/chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tkondrashov/chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkondrashov%2Fchat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkondrashov%2Fchat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb24f55f3da6d7a81394e29347bd6a2a25ac8d91
[INFO] checking tkondrashov/chat against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkondrashov%2Fchat" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tkondrashov/chat on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tkondrashov/chat
[INFO] finished tweaking git repo https://github.com/tkondrashov/chat
[INFO] tweaked toml for git repo https://github.com/tkondrashov/chat written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/tkondrashov/chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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] 1347cc82222b261e1c44a2fd2a5273834a48f2e13372f9bef567070020679804
[INFO] running `Command { std: "docker" "start" "-a" "1347cc82222b261e1c44a2fd2a5273834a48f2e13372f9bef567070020679804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1347cc82222b261e1c44a2fd2a5273834a48f2e13372f9bef567070020679804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1347cc82222b261e1c44a2fd2a5273834a48f2e13372f9bef567070020679804", kill_on_drop: false }`
[INFO] [stdout] 1347cc82222b261e1c44a2fd2a5273834a48f2e13372f9bef567070020679804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--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] 86b2970ebeb6fd77369a664edb052f07901623f40d59a5666687c3d0783264a2
[INFO] running `Command { std: "docker" "start" "-a" "86b2970ebeb6fd77369a664edb052f07901623f40d59a5666687c3d0783264a2", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling openssl v0.10.28
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling openssl-sys v0.9.54
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking workerpool v1.2.0
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]     Checking rust-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/main.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |               Message::Text(_from, _to, message) => {
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/main.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |               Message::Text(_from, _to, message) => {
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.32s
[INFO] running `Command { std: "docker" "inspect" "86b2970ebeb6fd77369a664edb052f07901623f40d59a5666687c3d0783264a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86b2970ebeb6fd77369a664edb052f07901623f40d59a5666687c3d0783264a2", kill_on_drop: false }`
[INFO] [stdout] 86b2970ebeb6fd77369a664edb052f07901623f40d59a5666687c3d0783264a2