[INFO] cloning repository https://github.com/jimktrains/synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jimktrains/synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimktrains%2Fsynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimktrains%2Fsynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] edcf2bfcac16e1423cc743bd7cb26bc23455b3fd
[INFO] checking jimktrains/synth against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimktrains%2Fsynth" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jimktrains/synth on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jimktrains/synth
[INFO] finished tweaking git repo https://github.com/jimktrains/synth
[INFO] tweaked toml for git repo https://github.com/jimktrains/synth written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jimktrains/synth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "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] e87784578f25c232e8b021a47cd2c19ae3f280a49a8846e4f5b87bf0e34cdfe9
[INFO] running `Command { std: "docker" "start" "-a" "e87784578f25c232e8b021a47cd2c19ae3f280a49a8846e4f5b87bf0e34cdfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e87784578f25c232e8b021a47cd2c19ae3f280a49a8846e4f5b87bf0e34cdfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87784578f25c232e8b021a47cd2c19ae3f280a49a8846e4f5b87bf0e34cdfe9", kill_on_drop: false }`
[INFO] [stdout] e87784578f25c232e8b021a47cd2c19ae3f280a49a8846e4f5b87bf0e34cdfe9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5308d15e0d8e64ec7441ea3f331ba392f005b5475d9fda621624f2fbd2e687e4
[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" "5308d15e0d8e64ec7441ea3f331ba392f005b5475d9fda621624f2fbd2e687e4", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling argh_shared v0.1.4
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking wav v0.6.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking alsa v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling argh_derive v0.1.4
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking argh v0.1.4
[INFO] [stderr]     Checking cpal v0.13.3
[INFO] [stderr]     Checking jsynth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.08s
[INFO] running `Command { std: "docker" "inspect" "5308d15e0d8e64ec7441ea3f331ba392f005b5475d9fda621624f2fbd2e687e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5308d15e0d8e64ec7441ea3f331ba392f005b5475d9fda621624f2fbd2e687e4", kill_on_drop: false }`
[INFO] [stdout] 5308d15e0d8e64ec7441ea3f331ba392f005b5475d9fda621624f2fbd2e687e4