[INFO] cloning repository https://github.com/yomaytk/Mir9cc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yomaytk/Mir9cc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyomaytk%2FMir9cc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyomaytk%2FMir9cc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bad8815701270c2e2153b342b2487183d833893a
[INFO] checking yomaytk/Mir9cc against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyomaytk%2FMir9cc" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yomaytk/Mir9cc on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yomaytk/Mir9cc
[INFO] finished tweaking git repo https://github.com/yomaytk/Mir9cc
[INFO] tweaked toml for git repo https://github.com/yomaytk/Mir9cc written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/yomaytk/Mir9cc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fef60c262eb01280a7aacc86555c70980428e5512473d8c6c2aec6598683ea88
[INFO] running `Command { std: "docker" "start" "-a" "fef60c262eb01280a7aacc86555c70980428e5512473d8c6c2aec6598683ea88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fef60c262eb01280a7aacc86555c70980428e5512473d8c6c2aec6598683ea88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef60c262eb01280a7aacc86555c70980428e5512473d8c6c2aec6598683ea88", kill_on_drop: false }`
[INFO] [stdout] fef60c262eb01280a7aacc86555c70980428e5512473d8c6c2aec6598683ea88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b579e0075b67122810d3ded7ae6f273f2998b81072f707d29e6a4a92002d5464
[INFO] running `Command { std: "docker" "start" "-a" "b579e0075b67122810d3ded7ae6f273f2998b81072f707d29e6a4a92002d5464", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking mir9cc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/preprocess.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub next: Option<Box<Env>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/token.rs:412:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |     panic!("{} c is not hex char.");
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 412 |     panic!("{} c is not hex char.", ...);
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 412 |     panic!("{}", "{} c is not hex char.");
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/preprocess.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub next: Option<Box<Env>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/token.rs:412:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |     panic!("{} c is not hex char.");
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 412 |     panic!("{} c is not hex char.", ...);
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 412 |     panic!("{}", "{} c is not hex char.");
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "b579e0075b67122810d3ded7ae6f273f2998b81072f707d29e6a4a92002d5464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b579e0075b67122810d3ded7ae6f273f2998b81072f707d29e6a4a92002d5464", kill_on_drop: false }`
[INFO] [stdout] b579e0075b67122810d3ded7ae6f273f2998b81072f707d29e6a4a92002d5464