[INFO] updating cached repository https://github.com/springbov/stupid-shell
[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] 404140e8d704cb82d7cc510c3a9e96be39c5444b
[INFO] testing springbov/stupid-shell against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringbov%2Fstupid-shell" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/springbov/stupid-shell 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/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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/springbov/stupid-shell 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 6523ff2594227b0ee5c6b13aa4c23babe99a7c4eea0639a9f9acf6ebcd4724b7
[INFO] running `"docker" "start" "-a" "6523ff2594227b0ee5c6b13aa4c23babe99a7c4eea0639a9f9acf6ebcd4724b7"`
[INFO] [stderr]    Compiling stupid-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
[INFO] [stderr]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:45:11
[INFO] [stderr]    |
[INFO] [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
[INFO] [stderr]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:70:11
[INFO] [stderr]    |
[INFO] [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
[INFO] [stderr]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "6523ff2594227b0ee5c6b13aa4c23babe99a7c4eea0639a9f9acf6ebcd4724b7"`
[INFO] running `"docker" "rm" "-f" "6523ff2594227b0ee5c6b13aa4c23babe99a7c4eea0639a9f9acf6ebcd4724b7"`
[INFO] [stdout] 6523ff2594227b0ee5c6b13aa4c23babe99a7c4eea0639a9f9acf6ebcd4724b7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] 87f2cd754e557a823ca4a8b47c5afb58e87954cf127fd95311bc2467f6b01b04
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "87f2cd754e557a823ca4a8b47c5afb58e87954cf127fd95311bc2467f6b01b04"`
[INFO] [stderr]    Compiling stupid-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
[INFO] [stderr]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:45:11
[INFO] [stderr]    |
[INFO] [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
[INFO] [stderr]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:70:11
[INFO] [stderr]    |
[INFO] [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
[INFO] [stderr]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "87f2cd754e557a823ca4a8b47c5afb58e87954cf127fd95311bc2467f6b01b04"`
[INFO] running `"docker" "rm" "-f" "87f2cd754e557a823ca4a8b47c5afb58e87954cf127fd95311bc2467f6b01b04"`
[INFO] [stdout] 87f2cd754e557a823ca4a8b47c5afb58e87954cf127fd95311bc2467f6b01b04
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ecb345d78fffd2a46b76ab764b72bc77bf4a48bb0469c9191f6b32b948479424
[INFO] running `"docker" "start" "-a" "ecb345d78fffd2a46b76ab764b72bc77bf4a48bb0469c9191f6b32b948479424"`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
[INFO] [stderr]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:45:11
[INFO] [stderr]    |
[INFO] [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
[INFO] [stderr]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/shell.rs:70:11
[INFO] [stderr]    |
[INFO] [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
[INFO] [stderr]    |           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stupid_shell-d8a53a5e0489cdb8
[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] running `"docker" "inspect" "ecb345d78fffd2a46b76ab764b72bc77bf4a48bb0469c9191f6b32b948479424"`
[INFO] running `"docker" "rm" "-f" "ecb345d78fffd2a46b76ab764b72bc77bf4a48bb0469c9191f6b32b948479424"`
[INFO] [stdout] ecb345d78fffd2a46b76ab764b72bc77bf4a48bb0469c9191f6b32b948479424