[INFO] updating cached repository felix-d/Rust-Monkey-Intepreter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/felix-d/Rust-Monkey-Intepreter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/felix-d/Rust-Monkey-Intepreter" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/felix-d/Rust-Monkey-Intepreter"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/felix-d/Rust-Monkey-Intepreter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/felix-d/Rust-Monkey-Intepreter" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/felix-d/Rust-Monkey-Intepreter"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/felix-d/Rust-Monkey-Intepreter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab0be05834178fc064e732297bf71f22733486ec
[INFO] sha for GitHub repo felix-d/Rust-Monkey-Intepreter: ab0be05834178fc064e732297bf71f22733486ec
[INFO] validating manifest of felix-d/Rust-Monkey-Intepreter on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of felix-d/Rust-Monkey-Intepreter on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing felix-d/Rust-Monkey-Intepreter
[INFO] finished frobbing felix-d/Rust-Monkey-Intepreter
[INFO] frobbed toml for felix-d/Rust-Monkey-Intepreter written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/felix-d/Rust-Monkey-Intepreter/Cargo.toml
[INFO] started frobbing felix-d/Rust-Monkey-Intepreter
[INFO] finished frobbing felix-d/Rust-Monkey-Intepreter
[INFO] frobbed toml for felix-d/Rust-Monkey-Intepreter written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/felix-d/Rust-Monkey-Intepreter/Cargo.toml
[INFO] crate felix-d/Rust-Monkey-Intepreter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking felix-d/Rust-Monkey-Intepreter against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-4/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/felix-d/Rust-Monkey-Intepreter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] de77fb074007f3e5a23be0046906898f13dfb993d45795ed8bd8773f0546637c
[INFO] running `"docker" "start" "-a" "de77fb074007f3e5a23be0046906898f13dfb993d45795ed8bd8773f0546637c"`
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `new_let`
[INFO] [stderr]   --> src/ast.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub(crate) fn new_let(identifier: &str, value: Expression) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.12s
[INFO] running `"docker" "inspect" "de77fb074007f3e5a23be0046906898f13dfb993d45795ed8bd8773f0546637c"`
[INFO] running `"docker" "rm" "-f" "de77fb074007f3e5a23be0046906898f13dfb993d45795ed8bd8773f0546637c"`
[INFO] [stdout] de77fb074007f3e5a23be0046906898f13dfb993d45795ed8bd8773f0546637c