[INFO] cloning repository https://github.com/mathis2003/kernos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mathis2003/kernos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathis2003%2Fkernos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathis2003%2Fkernos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3b282fd54412b597723aed683962ede942fe9c0
[INFO] checking mathis2003/kernos against master#1b8f2e46e14b08208a53585570edd9206374aae8 for pr-155418-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathis2003%2Fkernos" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mathis2003/kernos
[INFO] finished tweaking git repo https://github.com/mathis2003/kernos
[INFO] tweaked toml for git repo https://github.com/mathis2003/kernos written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mathis2003/kernos on toolchain 1b8f2e46e14b08208a53585570edd9206374aae8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1b8f2e46e14b08208a53585570edd9206374aae8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mathis2003/kernos 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" "+1b8f2e46e14b08208a53585570edd9206374aae8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1b8f2e46e14b08208a53585570edd9206374aae8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d29731fbc2b7caa8d6eafdaf5b3bc0c274b4da7b743e4c05414ab5d184fe019f
[INFO] running `Command { std: "docker" "start" "-a" "d29731fbc2b7caa8d6eafdaf5b3bc0c274b4da7b743e4c05414ab5d184fe019f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d29731fbc2b7caa8d6eafdaf5b3bc0c274b4da7b743e4c05414ab5d184fe019f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d29731fbc2b7caa8d6eafdaf5b3bc0c274b4da7b743e4c05414ab5d184fe019f", kill_on_drop: false }`
[INFO] [stdout] d29731fbc2b7caa8d6eafdaf5b3bc0c274b4da7b743e4c05414ab5d184fe019f
[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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1b8f2e46e14b08208a53585570edd9206374aae8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4efe56eaf76fd562c44ecb44d1eb846e4dc33860ccddcb627a32eb2f724eceee
[INFO] running `Command { std: "docker" "start" "-a" "4efe56eaf76fd562c44ecb44d1eb846e4dc33860ccddcb627a32eb2f724eceee", kill_on_drop: false }`
[INFO] [stderr]     Checking kernos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Keyword` is never constructed
[INFO] [stdout]  --> src/parser/keyword.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Keyword(String);
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `KEYWORDS` is never used
[INFO] [stdout]  --> src/parser/keyword.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const KEYWORDS: &[&str] = &["if", "then", "else", "struct", "variant", "return"];
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_keyword` is never used
[INFO] [stdout]  --> src/parser/keyword.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_keyword(chars: &[char]) -> ParseResult<Keyword> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/parser/number.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Number(i64);
[INFO] [stdout]   |            ------ ^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Number` 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 `Keyword` is never constructed
[INFO] [stdout]  --> src/parser/keyword.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Keyword(String);
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `KEYWORDS` is never used
[INFO] [stdout]  --> src/parser/keyword.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const KEYWORDS: &[&str] = &["if", "then", "else", "struct", "variant", "return"];
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_keyword` is never used
[INFO] [stdout]  --> src/parser/keyword.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_keyword(chars: &[char]) -> ParseResult<Keyword> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/parser/number.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Number(i64);
[INFO] [stdout]   |            ------ ^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Number` 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 0.17s
[INFO] running `Command { std: "docker" "inspect" "4efe56eaf76fd562c44ecb44d1eb846e4dc33860ccddcb627a32eb2f724eceee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4efe56eaf76fd562c44ecb44d1eb846e4dc33860ccddcb627a32eb2f724eceee", kill_on_drop: false }`
[INFO] [stdout] 4efe56eaf76fd562c44ecb44d1eb846e4dc33860ccddcb627a32eb2f724eceee
