[INFO] updating cached repository https://github.com/zirman/rust-lisp
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/zirman/rust-lisp
[INFO] [stderr]    2f03a9d..6d9e766  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6d9e766f1ee9948de1ce76244ec4f194730152e4
[INFO] checking zirman/rust-lisp against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzirman%2Frust-lisp" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zirman/rust-lisp on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zirman/rust-lisp
[INFO] finished tweaking git repo https://github.com/zirman/rust-lisp
[INFO] tweaked toml for git repo https://github.com/zirman/rust-lisp written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/zirman/rust-lisp already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b4616e339c84f8f8c997b5c7abf0dd8e176b5eca8869b8d088aeaeb8a41038d1
[INFO] running `"docker" "start" "-a" "b4616e339c84f8f8c997b5c7abf0dd8e176b5eca8869b8d088aeaeb8a41038d1"`
[INFO] [stderr]     Checking crust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/lisp.rs:579:29
[INFO] [stderr]     |
[INFO] [stderr] 579 |         LispFn(scope, head, body) => {
[INFO] [stderr]     |                             ^^^^ help: consider prefixing with an underscore: `_body`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/lisp.rs:579:23
[INFO] [stderr]     |
[INFO] [stderr] 579 |         LispFn(scope, head, body) => {
[INFO] [stderr]     |                       ^^^^ help: consider prefixing with an underscore: `_head`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scope`
[INFO] [stderr]    --> src/lisp.rs:579:16
[INFO] [stderr]     |
[INFO] [stderr] 579 |         LispFn(scope, head, body) => {
[INFO] [stderr]     |                ^^^^^ help: consider prefixing with an underscore: `_scope`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/lisp.rs:579:29
[INFO] [stderr]     |
[INFO] [stderr] 579 |         LispFn(scope, head, body) => {
[INFO] [stderr]     |                             ^^^^ help: consider prefixing with an underscore: `_body`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/lisp.rs:579:23
[INFO] [stderr]     |
[INFO] [stderr] 579 |         LispFn(scope, head, body) => {
[INFO] [stderr]     |                       ^^^^ help: consider prefixing with an underscore: `_head`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scope`
[INFO] [stderr]    --> src/lisp.rs:579:16
[INFO] [stderr]     |
[INFO] [stderr] 579 |         LispFn(scope, head, body) => {
[INFO] [stderr]     |                ^^^^^ help: consider prefixing with an underscore: `_scope`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnboundVar`
[INFO] [stderr]   --> src/lisp.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     UnboundVar(OwnedString, OwnedString),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pure`
[INFO] [stderr]    --> src/parse.rs:252:1
[INFO] [stderr]     |
[INFO] [stderr] 252 | pub fn pure<A: Clone>(x: A) -> impl Parser<A> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `end_by`
[INFO] [stderr]    --> src/parse.rs:421:1
[INFO] [stderr]     |
[INFO] [stderr] 421 | / pub fn end_by<PA, PS, A, S>(pa: PA, ps: PS) -> impl Parser<Vec<A>>
[INFO] [stderr] 422 | | where
[INFO] [stderr] 423 | |     PA: Parser<A>,
[INFO] [stderr] 424 | |     PS: Parser<S>,
[INFO] [stderr] ...   |
[INFO] [stderr] 454 | |     })
[INFO] [stderr] 455 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnboundVar`
[INFO] [stderr]   --> src/lisp.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     UnboundVar(OwnedString, OwnedString),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pure`
[INFO] [stderr]    --> src/parse.rs:252:1
[INFO] [stderr]     |
[INFO] [stderr] 252 | pub fn pure<A: Clone>(x: A) -> impl Parser<A> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `end_by`
[INFO] [stderr]    --> src/parse.rs:421:1
[INFO] [stderr]     |
[INFO] [stderr] 421 | / pub fn end_by<PA, PS, A, S>(pa: PA, ps: PS) -> impl Parser<Vec<A>>
[INFO] [stderr] 422 | | where
[INFO] [stderr] 423 | |     PA: Parser<A>,
[INFO] [stderr] 424 | |     PS: Parser<S>,
[INFO] [stderr] ...   |
[INFO] [stderr] 454 | |     })
[INFO] [stderr] 455 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `"docker" "inspect" "b4616e339c84f8f8c997b5c7abf0dd8e176b5eca8869b8d088aeaeb8a41038d1"`
[INFO] running `"docker" "rm" "-f" "b4616e339c84f8f8c997b5c7abf0dd8e176b5eca8869b8d088aeaeb8a41038d1"`
[INFO] [stdout] b4616e339c84f8f8c997b5c7abf0dd8e176b5eca8869b8d088aeaeb8a41038d1