[INFO] fetching crate rosu-mods 0.3.1...
[INFO] checking rosu-mods-0.3.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rosu-mods 0.3.1 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rosu-mods 0.3.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rosu-mods 0.3.1
[INFO] tweaked toml for crates.io crate rosu-mods 0.3.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rosu-mods 0.3.1 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 crates.io crate rosu-mods 0.3.1 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4207300b001aa47ca126353c1662b022661ab2d9c56013c47565fbc67f191a7c
[INFO] running `Command { std: "docker" "start" "-a" "4207300b001aa47ca126353c1662b022661ab2d9c56013c47565fbc67f191a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4207300b001aa47ca126353c1662b022661ab2d9c56013c47565fbc67f191a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4207300b001aa47ca126353c1662b022661ab2d9c56013c47565fbc67f191a7c", kill_on_drop: false }`
[INFO] [stdout] 4207300b001aa47ca126353c1662b022661ab2d9c56013c47565fbc67f191a7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 97df0ea2eae95f37e5bc8607ab4f7ab61de0bbba97442efebb69fad29d9ce8d1
[INFO] running `Command { std: "docker" "start" "-a" "97df0ea2eae95f37e5bc8607ab4f7ab61de0bbba97442efebb69fad29d9ce8d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling serde_json v1.0.139
[INFO] [stderr]     Checking ryu v1.0.19
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking rosu-mods v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<GameModsIntermode, Infallible>
[INFO] [stdout]    --> src/intermode.rs:712:53
[INFO] [stdout]     |
[INFO] [stdout] 712 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 713 | |         Ok(Self::from_acronyms(s))
[INFO] [stdout] 714 | |     }
[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<GameModsIntermode, Infallible>
[INFO] [stdout]    --> src/intermode.rs:713:9
[INFO] [stdout]     |
[INFO] [stdout] 713 |         Ok(Self::from_acronyms(s))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rosu-mods` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "97df0ea2eae95f37e5bc8607ab4f7ab61de0bbba97442efebb69fad29d9ce8d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97df0ea2eae95f37e5bc8607ab4f7ab61de0bbba97442efebb69fad29d9ce8d1", kill_on_drop: false }`
[INFO] [stdout] 97df0ea2eae95f37e5bc8607ab4f7ab61de0bbba97442efebb69fad29d9ce8d1