[INFO] updating cached repository https://github.com/wasuken/rs-lisp
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/wasuken/rs-lisp
[INFO] [stderr]    eb71353..82df4ae  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 82df4ae44b1ba622988fd02e78b9f52f43fb7eb4
[INFO] checking wasuken/rs-lisp against try#5fae8f15a4dcfce640ee800a4d495673524b0a4d for pr-71814
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasuken%2Frs-lisp" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wasuken/rs-lisp on toolchain 5fae8f15a4dcfce640ee800a4d495673524b0a4d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5fae8f15a4dcfce640ee800a4d495673524b0a4d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wasuken/rs-lisp
[INFO] finished tweaking git repo https://github.com/wasuken/rs-lisp
[INFO] tweaked toml for git repo https://github.com/wasuken/rs-lisp written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/wasuken/rs-lisp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5fae8f15a4dcfce640ee800a4d495673524b0a4d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+5fae8f15a4dcfce640ee800a4d495673524b0a4d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bf13d092064da9606bb523c9d3cb752f0bb550d86663bb28df463de4386dd899
[INFO] running `"docker" "start" "-a" "bf13d092064da9606bb523c9d3cb752f0bb550d86663bb28df463de4386dd899"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking rs-lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `stack` is never read
[INFO] [stderr]   --> src/main.rs:41:7
[INFO] [stderr]    |
[INFO] [stderr] 41 |                         stack = "".to_string();
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `stack` is never read
[INFO] [stderr]   --> src/main.rs:41:7
[INFO] [stderr]    |
[INFO] [stderr] 41 |                         stack = "".to_string();
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:258:6
[INFO] [stderr]     |
[INFO] [stderr] 258 |     let mut env = &mut LispEnv{variables: HashMap::new()};
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:261:6
[INFO] [stderr]     |
[INFO] [stderr] 261 |     let mut nodes = &mut lexer(s);
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/main.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     Bool(bool),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:258:6
[INFO] [stderr]     |
[INFO] [stderr] 258 |     let mut env = &mut LispEnv{variables: HashMap::new()};
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:261:6
[INFO] [stderr]     |
[INFO] [stderr] 261 |     let mut nodes = &mut lexer(s);
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:302:7
[INFO] [stderr]     |
[INFO] [stderr] 302 |         let mut env = &mut LispEnv{variables: HashMap::new()};
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:322:7
[INFO] [stderr]     |
[INFO] [stderr] 322 |         let mut env = &mut LispEnv{variables: HashMap::new()};
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/main.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     Bool(bool),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `"docker" "inspect" "bf13d092064da9606bb523c9d3cb752f0bb550d86663bb28df463de4386dd899"`
[INFO] running `"docker" "rm" "-f" "bf13d092064da9606bb523c9d3cb752f0bb550d86663bb28df463de4386dd899"`
[INFO] [stdout] bf13d092064da9606bb523c9d3cb752f0bb550d86663bb28df463de4386dd899