[INFO] cloning repository https://github.com/fenimore/latka
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fenimore/latka" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffenimore%2Flatka", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffenimore%2Flatka'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4695ffc447a986847248079454e996572f0a1878
[INFO] checking fenimore/latka against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffenimore%2Flatka" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fenimore/latka on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fenimore/latka
[INFO] finished tweaking git repo https://github.com/fenimore/latka
[INFO] tweaked toml for git repo https://github.com/fenimore/latka written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/fenimore/latka already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] ef27e38fd775fd46c019260b3abfd179901fa04bc2fc33637a305c0634c467ed
[INFO] running `Command { std: "docker" "start" "-a" "ef27e38fd775fd46c019260b3abfd179901fa04bc2fc33637a305c0634c467ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef27e38fd775fd46c019260b3abfd179901fa04bc2fc33637a305c0634c467ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef27e38fd775fd46c019260b3abfd179901fa04bc2fc33637a305c0634c467ed", kill_on_drop: false }`
[INFO] [stdout] ef27e38fd775fd46c019260b3abfd179901fa04bc2fc33637a305c0634c467ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] a9502ecffc9cab25b792978869ebc2bc970dbf81e1a0ef170944bef9345d641e
[INFO] running `Command { std: "docker" "start" "-a" "a9502ecffc9cab25b792978869ebc2bc970dbf81e1a0ef170944bef9345d641e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling byteorder v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]     Checking getopts v0.2.18
[INFO] [stderr]     Checking latka v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/bin/broker.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         'inner: loop {
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/bin/broker.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             'inner: loop {
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bin/broker.rs:212:31
[INFO] [stdout]     |
[INFO] [stdout] 212 |                     Ok(_) => {;},
[INFO] [stdout]     |                               ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/consumer.rs:96:19
[INFO] [stdout]    |
[INFO] [stdout] 96 |             _ => {;},
[INFO] [stdout]    |                   ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling speculate v0.1.1
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/bin/broker.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         'inner: loop {
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/bin/broker.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             'inner: loop {
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bin/broker.rs:212:31
[INFO] [stdout]     |
[INFO] [stdout] 212 |                     Ok(_) => {;},
[INFO] [stdout]     |                               ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/consumer.rs:96:19
[INFO] [stdout]    |
[INFO] [stdout] 96 |             _ => {;},
[INFO] [stdout]    |                   ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.30s
[INFO] running `Command { std: "docker" "inspect" "a9502ecffc9cab25b792978869ebc2bc970dbf81e1a0ef170944bef9345d641e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9502ecffc9cab25b792978869ebc2bc970dbf81e1a0ef170944bef9345d641e", kill_on_drop: false }`
[INFO] [stdout] a9502ecffc9cab25b792978869ebc2bc970dbf81e1a0ef170944bef9345d641e