[INFO] cloning repository https://github.com/komori-n/compiler-book-note
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/komori-n/compiler-book-note" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkomori-n%2Fcompiler-book-note", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkomori-n%2Fcompiler-book-note'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 144177f4e5a8a201dee671ece44e9ab921f70d7b
[INFO] checking komori-n/compiler-book-note against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkomori-n%2Fcompiler-book-note" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/komori-n/compiler-book-note on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/komori-n/compiler-book-note
[INFO] finished tweaking git repo https://github.com/komori-n/compiler-book-note
[INFO] tweaked toml for git repo https://github.com/komori-n/compiler-book-note written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/komori-n/compiler-book-note already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43665b5d86039ea7f2fc4153466a883b7943e982408346f0b96f9811abd29084
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "43665b5d86039ea7f2fc4153466a883b7943e982408346f0b96f9811abd29084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43665b5d86039ea7f2fc4153466a883b7943e982408346f0b96f9811abd29084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43665b5d86039ea7f2fc4153466a883b7943e982408346f0b96f9811abd29084", kill_on_drop: false }`
[INFO] [stdout] 43665b5d86039ea7f2fc4153466a883b7943e982408346f0b96f9811abd29084
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3db78b3056eb988b9d3984eecb8b8288bf197d8770a59d57e44a8a7b40ed4948
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3db78b3056eb988b9d3984eecb8b8288bf197d8770a59d57e44a8a7b40ed4948", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking nom v6.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking kcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `one_of`
[INFO] [stdout]  --> src/token/parser.rs:2:144
[INFO] [stdout]   |
[INFO] [stdout] 2 | ...er::complete::{alphanumeric1, digit1, multispace0, multispace1, one_of}, combinator::{map, map_res, opt}, error::{VerboseError}, multi...
[INFO] [stdout]   |                                                                    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `one_of`
[INFO] [stdout]  --> src/token/parser.rs:2:144
[INFO] [stdout]   |
[INFO] [stdout] 2 | ...er::complete::{alphanumeric1, digit1, multispace0, multispace1, one_of}, combinator::{map, map_res, opt}, error::{VerboseError}, multi...
[INFO] [stdout]   |                                                                    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Binary`
[INFO] [stdout]    --> src/token/parser.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |     use std::fmt::Binary;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.97s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3db78b3056eb988b9d3984eecb8b8288bf197d8770a59d57e44a8a7b40ed4948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3db78b3056eb988b9d3984eecb8b8288bf197d8770a59d57e44a8a7b40ed4948", kill_on_drop: false }`
[INFO] [stdout] 3db78b3056eb988b9d3984eecb8b8288bf197d8770a59d57e44a8a7b40ed4948