[INFO] cloning repository https://github.com/BiggerBen13/brain-fuck-interpr-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BiggerBen13/brain-fuck-interpr-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiggerBen13%2Fbrain-fuck-interpr-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiggerBen13%2Fbrain-fuck-interpr-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5a150dd21aede8b3b59ee8ca82838864c8e4ce6
[INFO] checking BiggerBen13/brain-fuck-interpr-rs 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%2FBiggerBen13%2Fbrain-fuck-interpr-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BiggerBen13/brain-fuck-interpr-rs
[INFO] finished tweaking git repo https://github.com/BiggerBen13/brain-fuck-interpr-rs
[INFO] tweaked toml for git repo https://github.com/BiggerBen13/brain-fuck-interpr-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BiggerBen13/brain-fuck-interpr-rs 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/BiggerBen13/brain-fuck-interpr-rs 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 89bbe01a0ef87884687ebca8a4668971d268374dbb73ee238ee338363c1aca28
[INFO] running `Command { std: "docker" "start" "-a" "89bbe01a0ef87884687ebca8a4668971d268374dbb73ee238ee338363c1aca28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89bbe01a0ef87884687ebca8a4668971d268374dbb73ee238ee338363c1aca28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89bbe01a0ef87884687ebca8a4668971d268374dbb73ee238ee338363c1aca28", kill_on_drop: false }`
[INFO] [stdout] 89bbe01a0ef87884687ebca8a4668971d268374dbb73ee238ee338363c1aca28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f8e00b3b626db58494347df63c45f0c0f6c13bbb036fa71bd842ea975f9eeb3a
[INFO] running `Command { std: "docker" "start" "-a" "f8e00b3b626db58494347df63c45f0c0f6c13bbb036fa71bd842ea975f9eeb3a", kill_on_drop: false }`
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]     Checking brain-fuck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/brainfuck.rs:194:24
[INFO] [stdout]     |
[INFO] [stdout] 194 |             Self::Left(v.try_into().unwrap_or(255))
[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<usize, Infallible>
[INFO] [stdout]    --> src/brainfuck.rs:201:25
[INFO] [stdout]     |
[INFO] [stdout] 201 |             Self::Right(v.try_into().unwrap_or(255))
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/brainfuck.rs:238:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |         dbg!(multi::many0(Instruction::parse).parse(input));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let _ = dbg!(multi::many0(Instruction::parse).parse(input));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `brain-fuck` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/brainfuck.rs:194:24
[INFO] [stdout]     |
[INFO] [stdout] 194 |             Self::Left(v.try_into().unwrap_or(255))
[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<usize, Infallible>
[INFO] [stdout]    --> src/brainfuck.rs:201:25
[INFO] [stdout]     |
[INFO] [stdout] 201 |             Self::Right(v.try_into().unwrap_or(255))
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `brain-fuck` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f8e00b3b626db58494347df63c45f0c0f6c13bbb036fa71bd842ea975f9eeb3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8e00b3b626db58494347df63c45f0c0f6c13bbb036fa71bd842ea975f9eeb3a", kill_on_drop: false }`
[INFO] [stdout] f8e00b3b626db58494347df63c45f0c0f6c13bbb036fa71bd842ea975f9eeb3a