[INFO] updating cached repository https://github.com/aragorndev0912/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] a4c700a5a8923d264d7ab9b5b5fcc2a0c44194f1
[INFO] testing aragorndev0912/rpn against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faragorndev0912%2Frpn" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aragorndev0912/rpn on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aragorndev0912/rpn
[INFO] finished tweaking git repo https://github.com/aragorndev0912/rpn
[INFO] tweaked toml for git repo https://github.com/aragorndev0912/rpn written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/aragorndev0912/rpn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3375b66067444959d25d9c4e8dd38bda141c815c9c1e0ef15b76e3e7ea56eb9
[INFO] running `"docker" "start" "-a" "a3375b66067444959d25d9c4e8dd38bda141c815c9c1e0ef15b76e3e7ea56eb9"`
[INFO] [stderr]    Compiling rpn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/rpn.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     (count)
[INFO] [stderr]     |     ^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "a3375b66067444959d25d9c4e8dd38bda141c815c9c1e0ef15b76e3e7ea56eb9"`
[INFO] running `"docker" "rm" "-f" "a3375b66067444959d25d9c4e8dd38bda141c815c9c1e0ef15b76e3e7ea56eb9"`
[INFO] [stdout] a3375b66067444959d25d9c4e8dd38bda141c815c9c1e0ef15b76e3e7ea56eb9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 61a58c8eec82959036730a40cd78a9abf3be85d46bfeb282b960b8d69730a20c
[INFO] running `"docker" "start" "-a" "61a58c8eec82959036730a40cd78a9abf3be85d46bfeb282b960b8d69730a20c"`
[INFO] [stderr]    Compiling rpn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/rpn.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     (count)
[INFO] [stderr]     |     ^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "61a58c8eec82959036730a40cd78a9abf3be85d46bfeb282b960b8d69730a20c"`
[INFO] running `"docker" "rm" "-f" "61a58c8eec82959036730a40cd78a9abf3be85d46bfeb282b960b8d69730a20c"`
[INFO] [stdout] 61a58c8eec82959036730a40cd78a9abf3be85d46bfeb282b960b8d69730a20c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8a4070fd8394a6c012d288761ac7fa39c972685b8ebc88aff7dbb133a5667e32
[INFO] running `"docker" "start" "-a" "8a4070fd8394a6c012d288761ac7fa39c972685b8ebc88aff7dbb133a5667e32"`
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/rpn.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     (count)
[INFO] [stderr]     |     ^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rpn-b0c6a3c709bb7e56
[INFO] running `"docker" "inspect" "8a4070fd8394a6c012d288761ac7fa39c972685b8ebc88aff7dbb133a5667e32"`
[INFO] running `"docker" "rm" "-f" "8a4070fd8394a6c012d288761ac7fa39c972685b8ebc88aff7dbb133a5667e32"`
[INFO] [stdout] 8a4070fd8394a6c012d288761ac7fa39c972685b8ebc88aff7dbb133a5667e32