[INFO] cloning repository https://github.com/yodang/mkdecode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yodang/mkdecode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyodang%2Fmkdecode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyodang%2Fmkdecode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d08a5cbd49f4cbda82227c5e2c4358ccaea99bc6
[INFO] building yodang/mkdecode against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyodang%2Fmkdecode" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yodang/mkdecode on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yodang/mkdecode
[INFO] finished tweaking git repo https://github.com/yodang/mkdecode
[INFO] tweaked toml for git repo https://github.com/yodang/mkdecode written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yodang/mkdecode 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71ea047f9fb4b9ffa171f939f0dc6c0bc7eea0963997d6eee7db58fc6655eacb
[INFO] running `Command { std: "docker" "start" "-a" "71ea047f9fb4b9ffa171f939f0dc6c0bc7eea0963997d6eee7db58fc6655eacb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71ea047f9fb4b9ffa171f939f0dc6c0bc7eea0963997d6eee7db58fc6655eacb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ea047f9fb4b9ffa171f939f0dc6c0bc7eea0963997d6eee7db58fc6655eacb", kill_on_drop: false }`
[INFO] [stdout] 71ea047f9fb4b9ffa171f939f0dc6c0bc7eea0963997d6eee7db58fc6655eacb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d92b7f6a01b7e63b61e2d5661a93d3d3d92ccf80e05aa62ee472258795cfb732
[INFO] running `Command { std: "docker" "start" "-a" "d92b7f6a01b7e63b61e2d5661a93d3d3d92ccf80e05aa62ee472258795cfb732", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]    Compiling mkdecode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Error` and `Result`
[INFO] [stdout]  --> src/matroska.rs:2:14
[INFO] [stdout]   |
[INFO] [stdout] 2 | use anyhow::{Error,Result};
[INFO] [stdout]   |              ^^^^^ ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "d92b7f6a01b7e63b61e2d5661a93d3d3d92ccf80e05aa62ee472258795cfb732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d92b7f6a01b7e63b61e2d5661a93d3d3d92ccf80e05aa62ee472258795cfb732", kill_on_drop: false }`
[INFO] [stdout] d92b7f6a01b7e63b61e2d5661a93d3d3d92ccf80e05aa62ee472258795cfb732
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07b594a04441d3408fd787a1f0a0384af75c850b01030c719e053b3309e49496
[INFO] running `Command { std: "docker" "start" "-a" "07b594a04441d3408fd787a1f0a0384af75c850b01030c719e053b3309e49496", kill_on_drop: false }`
[INFO] [stderr]    Compiling mkdecode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Error` and `Result`
[INFO] [stdout]  --> src/matroska.rs:2:14
[INFO] [stdout]   |
[INFO] [stdout] 2 | use anyhow::{Error,Result};
[INFO] [stdout]   |              ^^^^^ ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "07b594a04441d3408fd787a1f0a0384af75c850b01030c719e053b3309e49496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07b594a04441d3408fd787a1f0a0384af75c850b01030c719e053b3309e49496", kill_on_drop: false }`
[INFO] [stdout] 07b594a04441d3408fd787a1f0a0384af75c850b01030c719e053b3309e49496