[INFO] cloning repository https://github.com/KeeganMyers/mshell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KeeganMyers/mshell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeeganMyers%2Fmshell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeeganMyers%2Fmshell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32861b45ccac1ac0752bd2645ca67bae8adc9bbc
[INFO] checking KeeganMyers/mshell against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeeganMyers%2Fmshell" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KeeganMyers/mshell on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KeeganMyers/mshell
[INFO] finished tweaking git repo https://github.com/KeeganMyers/mshell
[INFO] tweaked toml for git repo https://github.com/KeeganMyers/mshell written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/KeeganMyers/mshell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b9a2ac4a5d3d621a4b933c9464989f816b98925c54a9d25c177ec51afea499b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6b9a2ac4a5d3d621a4b933c9464989f816b98925c54a9d25c177ec51afea499b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b9a2ac4a5d3d621a4b933c9464989f816b98925c54a9d25c177ec51afea499b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9a2ac4a5d3d621a4b933c9464989f816b98925c54a9d25c177ec51afea499b", kill_on_drop: false }`
[INFO] [stdout] 6b9a2ac4a5d3d621a4b933c9464989f816b98925c54a9d25c177ec51afea499b
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37571c9b895cae9531fb48b7e4a394b28220f355cc3398ab782e5d2dac65b3ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "37571c9b895cae9531fb48b7e4a394b28220f355cc3398ab782e5d2dac65b3ba", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking dirs-sys v0.3.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.10
[INFO] [stderr]     Checking dirs v2.0.1
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking regex v1.2.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rustyline v5.0.0
[INFO] [stderr]     Checking mshell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |             final_command.wait();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |             final_command.wait();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.83s
[INFO] running `Command { std: "docker" "inspect" "37571c9b895cae9531fb48b7e4a394b28220f355cc3398ab782e5d2dac65b3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37571c9b895cae9531fb48b7e4a394b28220f355cc3398ab782e5d2dac65b3ba", kill_on_drop: false }`
[INFO] [stdout] 37571c9b895cae9531fb48b7e4a394b28220f355cc3398ab782e5d2dac65b3ba