[INFO] cloning repository https://github.com/Maxito7/qualcosa
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Maxito7/qualcosa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxito7%2Fqualcosa", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxito7%2Fqualcosa'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 155cb77226e51dd55eaff9579f8d09462d2201c2
[INFO] checking Maxito7/qualcosa against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxito7%2Fqualcosa" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Maxito7/qualcosa on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Maxito7/qualcosa
[INFO] finished tweaking git repo https://github.com/Maxito7/qualcosa
[INFO] tweaked toml for git repo https://github.com/Maxito7/qualcosa written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Maxito7/qualcosa 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" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ed0c266f7c46a3a6c77074bc383135819ffa354f8cc21b661d5cde535e0530e
[INFO] running `Command { std: "docker" "start" "-a" "1ed0c266f7c46a3a6c77074bc383135819ffa354f8cc21b661d5cde535e0530e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ed0c266f7c46a3a6c77074bc383135819ffa354f8cc21b661d5cde535e0530e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed0c266f7c46a3a6c77074bc383135819ffa354f8cc21b661d5cde535e0530e", kill_on_drop: false }`
[INFO] [stdout] 1ed0c266f7c46a3a6c77074bc383135819ffa354f8cc21b661d5cde535e0530e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 476dea8c42ac100df186e6e14e5b2cfea889286a0105702af286a6c040787827
[INFO] running `Command { std: "docker" "start" "-a" "476dea8c42ac100df186e6e14e5b2cfea889286a0105702af286a6c040787827", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]     Checking qualcosa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]  --> tests/tests.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use core::fmt;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/tests.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         hex_dump.fill_bytes(&file, true);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let _ = hex_dump.fill_bytes(&file, true);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.07s
[INFO] running `Command { std: "docker" "inspect" "476dea8c42ac100df186e6e14e5b2cfea889286a0105702af286a6c040787827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "476dea8c42ac100df186e6e14e5b2cfea889286a0105702af286a6c040787827", kill_on_drop: false }`
[INFO] [stdout] 476dea8c42ac100df186e6e14e5b2cfea889286a0105702af286a6c040787827