[INFO] cloning repository https://github.com/springbov/stupid-shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/springbov/stupid-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringbov%2Fstupid-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringbov%2Fstupid-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 404140e8d704cb82d7cc510c3a9e96be39c5444b
[INFO] checking springbov/stupid-shell against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringbov%2Fstupid-shell" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/springbov/stupid-shell on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/springbov/stupid-shell
[INFO] finished tweaking git repo https://github.com/springbov/stupid-shell
[INFO] tweaked toml for git repo https://github.com/springbov/stupid-shell written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/springbov/stupid-shell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cff8debbd58079b4f006789a3329f2de91775a80d2d40bd7cad5b04370c5d177
[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" "cff8debbd58079b4f006789a3329f2de91775a80d2d40bd7cad5b04370c5d177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cff8debbd58079b4f006789a3329f2de91775a80d2d40bd7cad5b04370c5d177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff8debbd58079b4f006789a3329f2de91775a80d2d40bd7cad5b04370c5d177", kill_on_drop: false }`
[INFO] [stdout] cff8debbd58079b4f006789a3329f2de91775a80d2d40bd7cad5b04370c5d177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 479fed63a2b99cbb61eee4a6760ed17a138962258d1dac9f3f1453f152a70651
[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" "479fed63a2b99cbb61eee4a6760ed17a138962258d1dac9f3f1453f152a70651", kill_on_drop: false }`
[INFO] [stderr]     Checking stupid-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn vim(x: Option<String>) -> Option<String>
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |   fn emacs(x: Option<String>) -> Option<String>
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:45:11
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn nano(x: Option<String>) -> Option<String>
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |   fn ed(x: Option<String>) -> Option<String>
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |   fn butterfly(x: Option<String>) -> Option<String>
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:70:11
[INFO] [stdout]    |
[INFO] [stdout] 70 |   fn life(x: Option<String>) -> Option<String>
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn vim(x: Option<String>) -> Option<String>
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |   fn emacs(x: Option<String>) -> Option<String>
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:45:11
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn nano(x: Option<String>) -> Option<String>
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |   fn ed(x: Option<String>) -> Option<String>
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |   fn butterfly(x: Option<String>) -> Option<String>
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/shell.rs:70:11
[INFO] [stdout]    |
[INFO] [stdout] 70 |   fn life(x: Option<String>) -> Option<String>
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     io::stdout().flush();
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     io::stdout().flush();
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "479fed63a2b99cbb61eee4a6760ed17a138962258d1dac9f3f1453f152a70651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "479fed63a2b99cbb61eee4a6760ed17a138962258d1dac9f3f1453f152a70651", kill_on_drop: false }`
[INFO] [stdout] 479fed63a2b99cbb61eee4a6760ed17a138962258d1dac9f3f1453f152a70651