[INFO] cloning repository https://github.com/yanknvim/rust-parser-combinator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yanknvim/rust-parser-combinator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyanknvim%2Frust-parser-combinator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyanknvim%2Frust-parser-combinator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74da3395bd8beb275cb3f118acc874383bd0f9fc
[INFO] checking yanknvim/rust-parser-combinator against try#4797991aa2efb6d658150f10425b3f3b5d10eceb for pr-143193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyanknvim%2Frust-parser-combinator" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yanknvim/rust-parser-combinator
[INFO] finished tweaking git repo https://github.com/yanknvim/rust-parser-combinator
[INFO] tweaked toml for git repo https://github.com/yanknvim/rust-parser-combinator written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yanknvim/rust-parser-combinator on toolchain 4797991aa2efb6d658150f10425b3f3b5d10eceb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yanknvim/rust-parser-combinator 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" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3422d6acb89d4ae24acdde01e8c3e80ce730e5efd91286ac8d0fb4891ccdd30f
[INFO] running `Command { std: "docker" "start" "-a" "3422d6acb89d4ae24acdde01e8c3e80ce730e5efd91286ac8d0fb4891ccdd30f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3422d6acb89d4ae24acdde01e8c3e80ce730e5efd91286ac8d0fb4891ccdd30f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3422d6acb89d4ae24acdde01e8c3e80ce730e5efd91286ac8d0fb4891ccdd30f", kill_on_drop: false }`
[INFO] [stdout] 3422d6acb89d4ae24acdde01e8c3e80ce730e5efd91286ac8d0fb4891ccdd30f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 494f6f4083fdf6059768a2afdce6fc00b10812c259e2256f0b4769836bbcb171
[INFO] running `Command { std: "docker" "start" "-a" "494f6f4083fdf6059768a2afdce6fc00b10812c259e2256f0b4769836bbcb171", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-parser-combinator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `any_char` is never used
[INFO] [stdout]  --> src/char.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn any_char() -> impl Parser<char> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `char1` is never used
[INFO] [stdout]   --> src/char.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn char1(c: char) -> impl Parser<char> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `skip_whitespace` is never used
[INFO] [stdout]   --> src/char.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn skip_whitespace() -> impl Parser<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit1` is never used
[INFO] [stdout]   --> src/char.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn digit1() -> impl Parser<u32> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `many` is never used
[INFO] [stdout]  --> src/combinator.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn many<T>(parser: impl Parser<T>) -> impl Parser<Vec<T>> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `many1` is never used
[INFO] [stdout]   --> src/combinator.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn many1<T>(parser: impl Parser<T>) -> impl Parser<Vec<T>> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `choice` is never used
[INFO] [stdout]   --> src/combinator.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn choice<T>(a: impl Parser<T>, b: impl Parser<T>) -> impl Parser<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser` is never used
[INFO] [stdout]  --> src/parser.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Parser<T>: Fn(String) -> Option<(T, String)> {}
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "494f6f4083fdf6059768a2afdce6fc00b10812c259e2256f0b4769836bbcb171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "494f6f4083fdf6059768a2afdce6fc00b10812c259e2256f0b4769836bbcb171", kill_on_drop: false }`
[INFO] [stdout] 494f6f4083fdf6059768a2afdce6fc00b10812c259e2256f0b4769836bbcb171