[INFO] cloning repository https://github.com/alerighi/tabox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alerighi/tabox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falerighi%2Ftabox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falerighi%2Ftabox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c3106e4e077f750b54fe4d399ac86c26e0278bc
[INFO] checking alerighi/tabox against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falerighi%2Ftabox" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alerighi/tabox on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alerighi/tabox
[INFO] finished tweaking git repo https://github.com/alerighi/tabox
[INFO] tweaked toml for git repo https://github.com/alerighi/tabox written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/alerighi/tabox 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package
[INFO] [stderr]     Updating tabox v1.3.0 (/workspace/builds/worker-2-tc1/source) -> v1.3.1
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tempfile v3.4.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.5
[INFO] [stderr]   Downloaded core_affinity v0.5.10
[INFO] [stderr]   Downloaded rustix v0.36.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1278fbcd069b13e21c56a365c91f7d827f118066b286ba33d9ec9976bfc5441e
[INFO] running `Command { std: "docker" "start" "-a" "1278fbcd069b13e21c56a365c91f7d827f118066b286ba33d9ec9976bfc5441e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1278fbcd069b13e21c56a365c91f7d827f118066b286ba33d9ec9976bfc5441e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1278fbcd069b13e21c56a365c91f7d827f118066b286ba33d9ec9976bfc5441e", kill_on_drop: false }`
[INFO] [stdout] 1278fbcd069b13e21c56a365c91f7d827f118066b286ba33d9ec9976bfc5441e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b46dce623b2324308352f8d8a6bd01c724b6255462aa8354ca833e8e16356aaf
[INFO] running `Command { std: "docker" "start" "-a" "b46dce623b2324308352f8d8a6bd01c724b6255462aa8354ca833e8e16356aaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling io-lifetimes v1.0.5
[INFO] [stderr]    Compiling rustix v0.36.8
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling seccomp-sys v0.1.3
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking nix v0.24.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking tempfile v3.4.0
[INFO] [stderr]     Checking serde v1.0.137
[INFO] [stderr]     Checking serde_json v1.0.81
[INFO] [stderr]     Checking tabox v1.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `nix::NixPath`
[INFO] [stdout]    --> src/util.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         use nix::NixPath;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::NixPath`
[INFO] [stdout]    --> src/util.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         use nix::NixPath;
[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` profile [unoptimized + debuginfo] target(s) in 13.65s
[INFO] running `Command { std: "docker" "inspect" "b46dce623b2324308352f8d8a6bd01c724b6255462aa8354ca833e8e16356aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b46dce623b2324308352f8d8a6bd01c724b6255462aa8354ca833e8e16356aaf", kill_on_drop: false }`
[INFO] [stdout] b46dce623b2324308352f8d8a6bd01c724b6255462aa8354ca833e8e16356aaf