[INFO] cloning repository https://github.com/yuzhiquan/rust-101
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuzhiquan/rust-101" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuzhiquan%2Frust-101", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuzhiquan%2Frust-101'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71cfa5e0c5d6b7df3a2b617ec63ca246553f7612
[INFO] checking yuzhiquan/rust-101 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuzhiquan%2Frust-101" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yuzhiquan/rust-101
[INFO] finished tweaking git repo https://github.com/yuzhiquan/rust-101
[INFO] tweaked toml for git repo https://github.com/yuzhiquan/rust-101 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yuzhiquan/rust-101 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yuzhiquan/rust-101 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7c917f52fb096396df3a462ba56932b735ca2e4a1e6eff66b7ccfc0c925f175
[INFO] running `Command { std: "docker" "start" "-a" "e7c917f52fb096396df3a462ba56932b735ca2e4a1e6eff66b7ccfc0c925f175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7c917f52fb096396df3a462ba56932b735ca2e4a1e6eff66b7ccfc0c925f175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c917f52fb096396df3a462ba56932b735ca2e4a1e6eff66b7ccfc0c925f175", kill_on_drop: false }`
[INFO] [stdout] e7c917f52fb096396df3a462ba56932b735ca2e4a1e6eff66b7ccfc0c925f175
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15919e4e33046d3162bcf36cbd2371ff07dacc1487e68fd5e89f7c58cbc872fc
[INFO] running `Command { std: "docker" "start" "-a" "15919e4e33046d3162bcf36cbd2371ff07dacc1487e68fd5e89f7c58cbc872fc", kill_on_drop: false }`
[INFO] [stderr]     Checking logging v0.1.0 (/opt/rustwide/workdir/logging)
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `UnPrintable` is never constructed
[INFO] [stdout]  --> src/fmt_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct UnPrintable(i32);
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/fmt_test.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct DebugPrintable(i32);
[INFO] [stdout]   |        -------------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `DebugPrintable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnPrintable` is never constructed
[INFO] [stdout]  --> src/fmt_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct UnPrintable(i32);
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/fmt_test.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct DebugPrintable(i32);
[INFO] [stdout]   |        -------------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `DebugPrintable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "15919e4e33046d3162bcf36cbd2371ff07dacc1487e68fd5e89f7c58cbc872fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15919e4e33046d3162bcf36cbd2371ff07dacc1487e68fd5e89f7c58cbc872fc", kill_on_drop: false }`
[INFO] [stdout] 15919e4e33046d3162bcf36cbd2371ff07dacc1487e68fd5e89f7c58cbc872fc