[INFO] updating cached repository https://github.com/t-eckert/rpn
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3a25f61ae1ea7368929240d5ad199ba9e06ddb8
[INFO] checking t-eckert/rpn against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-eckert%2Frpn" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/t-eckert/rpn on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/t-eckert/rpn
[INFO] finished tweaking git repo https://github.com/t-eckert/rpn
[INFO] tweaked toml for git repo https://github.com/t-eckert/rpn written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/t-eckert/rpn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] b1d5b028ad404e7279dabd67b1946580d7af7f3f538cc16270f9c340f96823d7
[INFO] running `"docker" "start" "-a" "b1d5b028ad404e7279dabd67b1946580d7af7f3f538cc16270f9c340f96823d7"`
[INFO] [stderr]     Checking rpn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/evaluator.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 23 | /             match instruction {
[INFO] [stderr] 24 | |                 "+" => &self.add(),
[INFO] [stderr] 25 | |                 "-" => &self.subtract(),
[INFO] [stderr] 26 | |                 "*" => &self.multiply(),
[INFO] [stderr] ...  |
[INFO] [stderr] 30 | |                     &self.push(value)
[INFO] [stderr]    | |                     ^^^^^^^^^^^^^^^^^ expected `()`, found `&()`
[INFO] [stderr] 31 | |                 }
[INFO] [stderr] 32 | |             }
[INFO] [stderr]    | |_____________- expected this to be `()`
[INFO] [stderr]    |
[INFO] [stderr] help: consider using a semicolon here
[INFO] [stderr]    |
[INFO] [stderr] 32 |             };
[INFO] [stderr]    |              ^
[INFO] [stderr] help: consider removing the borrow
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     self.push(value)
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `rpn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/evaluator.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 23 | /             match instruction {
[INFO] [stderr] 24 | |                 "+" => &self.add(),
[INFO] [stderr] 25 | |                 "-" => &self.subtract(),
[INFO] [stderr] 26 | |                 "*" => &self.multiply(),
[INFO] [stderr] ...  |
[INFO] [stderr] 30 | |                     &self.push(value)
[INFO] [stderr]    | |                     ^^^^^^^^^^^^^^^^^ expected `()`, found `&()`
[INFO] [stderr] 31 | |                 }
[INFO] [stderr] 32 | |             }
[INFO] [stderr]    | |_____________- expected this to be `()`
[INFO] [stderr]    |
[INFO] [stderr] help: consider using a semicolon here
[INFO] [stderr]    |
[INFO] [stderr] 32 |             };
[INFO] [stderr]    |              ^
[INFO] [stderr] help: consider removing the borrow
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     self.push(value)
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `rpn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b1d5b028ad404e7279dabd67b1946580d7af7f3f538cc16270f9c340f96823d7"`
[INFO] running `"docker" "rm" "-f" "b1d5b028ad404e7279dabd67b1946580d7af7f3f538cc16270f9c340f96823d7"`
[INFO] [stdout] b1d5b028ad404e7279dabd67b1946580d7af7f3f538cc16270f9c340f96823d7