[INFO] cloning repository https://github.com/selenologist/midi-buttons-to-mmc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/selenologist/midi-buttons-to-mmc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fselenologist%2Fmidi-buttons-to-mmc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fselenologist%2Fmidi-buttons-to-mmc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 748302836f4e513bd5d9323b7153c920c65070e8
[INFO] checking selenologist/midi-buttons-to-mmc against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fselenologist%2Fmidi-buttons-to-mmc" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/selenologist/midi-buttons-to-mmc on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/selenologist/midi-buttons-to-mmc
[INFO] finished tweaking git repo https://github.com/selenologist/midi-buttons-to-mmc
[INFO] tweaked toml for git repo https://github.com/selenologist/midi-buttons-to-mmc written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/selenologist/midi-buttons-to-mmc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/selenologist/ghakuf`
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 992317ee773d66f3a6d4b97395ca3e1c9287ab3da0f966b3516121fb2eb9db1a
[INFO] running `Command { std: "docker" "start" "-a" "992317ee773d66f3a6d4b97395ca3e1c9287ab3da0f966b3516121fb2eb9db1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "992317ee773d66f3a6d4b97395ca3e1c9287ab3da0f966b3516121fb2eb9db1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "992317ee773d66f3a6d4b97395ca3e1c9287ab3da0f966b3516121fb2eb9db1a", kill_on_drop: false }`
[INFO] [stdout] 992317ee773d66f3a6d4b97395ca3e1c9287ab3da0f966b3516121fb2eb9db1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a46fbf4d7e388ee1ef1d09f10ec9ea44607d8a14a00edc11cc4b7ed3c2d57cb3
[INFO] running `Command { std: "docker" "start" "-a" "a46fbf4d7e388ee1ef1d09f10ec9ea44607d8a14a00edc11cc4b7ed3c2d57cb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking ghakuf v0.5.3 (https://github.com/selenologist/ghakuf#3da123f9)
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking alsa v0.2.2
[INFO] [stderr]     Checking midir v0.5.0
[INFO] [stderr]     Checking midi-buttons-to-mmc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `MMC_REWIND` is never used
[INFO] [stdout]   --> src/main.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MMC_REWIND: &'static [u8] = &[0xf0, 0x7f, 0x00, 0x06, 0x05, 0xf7]; // rewind
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MMC_REWIND` is never used
[INFO] [stdout]   --> src/main.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MMC_REWIND: &'static [u8] = &[0xf0, 0x7f, 0x00, 0x06, 0x05, 0xf7]; // rewind
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.52s
[INFO] running `Command { std: "docker" "inspect" "a46fbf4d7e388ee1ef1d09f10ec9ea44607d8a14a00edc11cc4b7ed3c2d57cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a46fbf4d7e388ee1ef1d09f10ec9ea44607d8a14a00edc11cc4b7ed3c2d57cb3", kill_on_drop: false }`
[INFO] [stdout] a46fbf4d7e388ee1ef1d09f10ec9ea44607d8a14a00edc11cc4b7ed3c2d57cb3