[INFO] cloning repository https://github.com/erithritol/strace-unfuck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erithritol/strace-unfuck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferithritol%2Fstrace-unfuck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferithritol%2Fstrace-unfuck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 535e13e0e8f5db45d4bc9ebe0e6484e947a41a79
[INFO] checking erithritol/strace-unfuck against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferithritol%2Fstrace-unfuck" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/erithritol/strace-unfuck
[INFO] finished tweaking git repo https://github.com/erithritol/strace-unfuck
[INFO] tweaked toml for git repo https://github.com/erithritol/strace-unfuck written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/erithritol/strace-unfuck on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/erithritol/strace-unfuck already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4702a97bf000638866e76d908f64196c4383aa7546c2aac5e51bff27aba4bf1a
[INFO] running `Command { std: "docker" "start" "-a" "4702a97bf000638866e76d908f64196c4383aa7546c2aac5e51bff27aba4bf1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4702a97bf000638866e76d908f64196c4383aa7546c2aac5e51bff27aba4bf1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4702a97bf000638866e76d908f64196c4383aa7546c2aac5e51bff27aba4bf1a", kill_on_drop: false }`
[INFO] [stdout] 4702a97bf000638866e76d908f64196c4383aa7546c2aac5e51bff27aba4bf1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97f81d1c8300fad74a1d86da9ad2a6e8f236d132854749964af7b4447ba48ac5
[INFO] running `Command { std: "docker" "start" "-a" "97f81d1c8300fad74a1d86da9ad2a6e8f236d132854749964af7b4447ba48ac5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking castaway v0.2.3
[INFO] [stderr]     Checking compact_str v0.9.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking strace-unfuck v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `elapsed` is never read
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct CallInfo {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 35 |     elapsed: Duration,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CallInfo` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Opcode, Infallible>
[INFO] [stdout]    --> src/main.rs:111:42
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     let opcode: Opcode = opcode.parse().unwrap();
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Opcode, Infallible>
[INFO] [stdout]   --> src/opcode.rs:80:57
[INFO] [stdout]    |
[INFO] [stdout] 80 |       fn from_str(label: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _________________________________________________________^
[INFO] [stdout] 81 | |         let opcode = match label {
[INFO] [stdout] 82 | |             "VIDEO_SELECT_SOURCE" => Self::ModemOn,
[INFO] [stdout] 83 | |             "VIDEO_SLOWMOTION" => Self::ModemOff,
[INFO] [stdout] ...  |
[INFO] [stdout] 98 | |         Ok(opcode)
[INFO] [stdout] 99 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Opcode, Infallible>
[INFO] [stdout]   --> src/opcode.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         Ok(opcode)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `strace-unfuck` (bin "strace-unfuck" test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `elapsed` is never read
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct CallInfo {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 35 |     elapsed: Duration,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CallInfo` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Opcode, Infallible>
[INFO] [stdout]    --> src/main.rs:111:42
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     let opcode: Opcode = opcode.parse().unwrap();
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Opcode, Infallible>
[INFO] [stdout]   --> src/opcode.rs:80:57
[INFO] [stdout]    |
[INFO] [stdout] 80 |       fn from_str(label: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _________________________________________________________^
[INFO] [stdout] 81 | |         let opcode = match label {
[INFO] [stdout] 82 | |             "VIDEO_SELECT_SOURCE" => Self::ModemOn,
[INFO] [stdout] 83 | |             "VIDEO_SLOWMOTION" => Self::ModemOff,
[INFO] [stdout] ...  |
[INFO] [stdout] 98 | |         Ok(opcode)
[INFO] [stdout] 99 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Opcode, Infallible>
[INFO] [stdout]   --> src/opcode.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         Ok(opcode)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `strace-unfuck` (bin "strace-unfuck") due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "97f81d1c8300fad74a1d86da9ad2a6e8f236d132854749964af7b4447ba48ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f81d1c8300fad74a1d86da9ad2a6e8f236d132854749964af7b4447ba48ac5", kill_on_drop: false }`
[INFO] [stdout] 97f81d1c8300fad74a1d86da9ad2a6e8f236d132854749964af7b4447ba48ac5
