[INFO] cloning repository https://github.com/songzhi/shell
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/songzhi/shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsongzhi%2Fshell"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsongzhi%2Fshell'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 297fc80e2ae2b8115dd82d3e8ae499144bceeb15
[INFO] checking songzhi/shell against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsongzhi%2Fshell" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/songzhi/shell on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/songzhi/shell
[INFO] finished tweaking git repo https://github.com/songzhi/shell
[INFO] tweaked toml for git repo https://github.com/songzhi/shell written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/songzhi/shell already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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] 2e7775487f198dcc3255ff2c0521fed25fe3b5fb26986ef89cd8a4b8933627a2
[INFO] running `"docker" "start" "-a" "2e7775487f198dcc3255ff2c0521fed25fe3b5fb26986ef89cd8a4b8933627a2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking bytecount v0.3.2
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking dunce v1.0.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]     Checking vte v0.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking shellexpand v1.1.1
[INFO] [stderr]     Checking strip-ansi-escapes v0.1.0
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]    Compiling nom v5.1.0
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking which v3.1.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]     Checking rustyline v6.0.0
[INFO] [stderr]     Checking nom_locate v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling enumflags2_derive v0.6.2
[INFO] [stderr]    Compiling nom-tracable-macros v0.4.1
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]     Checking enumflags2 v0.6.2
[INFO] [stderr]     Checking nom-tracable v0.4.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking bigdecimal v0.1.0
[INFO] [stderr]     Checking shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/commands/classified/external.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 | /     (argument.starts_with('"') && argument.ends_with('"')
[INFO] [stderr] 152 | |         || (argument.starts_with('\'') && argument.ends_with('\'')))
[INFO] [stderr]     | |____________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 151 |     argument.starts_with('"') && argument.ends_with('"')
[INFO] [stderr] 152 |         || (argument.starts_with('\'') && argument.ends_with('\''))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/commands/classified/external.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 | /     (argument.starts_with('"') && argument.ends_with('"')
[INFO] [stderr] 152 | |         || (argument.starts_with('\'') && argument.ends_with('\'')))
[INFO] [stderr]     | |____________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 151 |     argument.starts_with('"') && argument.ends_with('"')
[INFO] [stderr] 152 |         || (argument.starts_with('\'') && argument.ends_with('\''))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `"docker" "inspect" "2e7775487f198dcc3255ff2c0521fed25fe3b5fb26986ef89cd8a4b8933627a2"`
[INFO] running `"docker" "rm" "-f" "2e7775487f198dcc3255ff2c0521fed25fe3b5fb26986ef89cd8a4b8933627a2"`
[INFO] [stdout] 2e7775487f198dcc3255ff2c0521fed25fe3b5fb26986ef89cd8a4b8933627a2