[INFO] cloning repository https://github.com/Yarn/button_timing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yarn/button_timing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYarn%2Fbutton_timing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYarn%2Fbutton_timing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a294379d59227e54a72e62eaecbd7d83529ccd9
[INFO] checking Yarn/button_timing against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYarn%2Fbutton_timing" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yarn/button_timing on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yarn/button_timing
[INFO] finished tweaking git repo https://github.com/Yarn/button_timing
[INFO] tweaked toml for git repo https://github.com/Yarn/button_timing written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Yarn/button_timing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40d104df271d41891d04eb71e0c7e98157f8d7381aa5d3b6b6fd01e8e313df00
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "40d104df271d41891d04eb71e0c7e98157f8d7381aa5d3b6b6fd01e8e313df00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40d104df271d41891d04eb71e0c7e98157f8d7381aa5d3b6b6fd01e8e313df00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40d104df271d41891d04eb71e0c7e98157f8d7381aa5d3b6b6fd01e8e313df00", kill_on_drop: false }`
[INFO] [stdout] 40d104df271d41891d04eb71e0c7e98157f8d7381aa5d3b6b6fd01e8e313df00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12bf5c628dbd3fd253ad006404873e3385d1df0ec69905461452802dcb1af8f1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "12bf5c628dbd3fd253ad006404873e3385d1df0ec69905461452802dcb1af8f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking crossterm v0.16.0
[INFO] [stderr]     Checking button_timing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `KeyEvent`
[INFO] [stdout]  --> src/main.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crossterm::event::{KeyEvent, KeyCode};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `KeyEvent`
[INFO] [stdout]  --> src/main.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crossterm::event::{KeyEvent, KeyCode};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 4.88s
[INFO] running `Command { std: "docker" "inspect" "12bf5c628dbd3fd253ad006404873e3385d1df0ec69905461452802dcb1af8f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12bf5c628dbd3fd253ad006404873e3385d1df0ec69905461452802dcb1af8f1", kill_on_drop: false }`
[INFO] [stdout] 12bf5c628dbd3fd253ad006404873e3385d1df0ec69905461452802dcb1af8f1