[INFO] cloning repository https://github.com/lookback/libavcodec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lookback/libavcodec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flookback%2Flibavcodec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flookback%2Flibavcodec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e50f4fd7b3f97d4755c1355613efa2dafae2516
[INFO] checking lookback/libavcodec 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%2Flookback%2Flibavcodec" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lookback/libavcodec
[INFO] finished tweaking git repo https://github.com/lookback/libavcodec
[INFO] tweaked toml for git repo https://github.com/lookback/libavcodec written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lookback/libavcodec 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/lookback/libavcodec 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 13eea06200efc5410efa046d3648b1d15b28a37041e9ad75fa2bdba4d068c9b1
[INFO] running `Command { std: "docker" "start" "-a" "13eea06200efc5410efa046d3648b1d15b28a37041e9ad75fa2bdba4d068c9b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13eea06200efc5410efa046d3648b1d15b28a37041e9ad75fa2bdba4d068c9b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13eea06200efc5410efa046d3648b1d15b28a37041e9ad75fa2bdba4d068c9b1", kill_on_drop: false }`
[INFO] [stdout] 13eea06200efc5410efa046d3648b1d15b28a37041e9ad75fa2bdba4d068c9b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 16f66725cfb823b9edb60f43368766a1d000625282d59ed32f4adadf8bc23075
[INFO] running `Command { std: "docker" "start" "-a" "16f66725cfb823b9edb60f43368766a1d000625282d59ed32f4adadf8bc23075", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling bindgen v0.70.1
[INFO] [stderr]    Compiling thiserror v2.0.3
[INFO] [stderr]    Compiling prettyplease v0.2.25
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling cc v1.1.37
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]    Compiling regex-automata v0.4.8
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling libavcodec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decoder.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     len.try_into().unwrap(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libavcodec` (lib) due to 1 previous error
[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/decoder.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     len.try_into().unwrap(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libavcodec` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "16f66725cfb823b9edb60f43368766a1d000625282d59ed32f4adadf8bc23075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16f66725cfb823b9edb60f43368766a1d000625282d59ed32f4adadf8bc23075", kill_on_drop: false }`
[INFO] [stdout] 16f66725cfb823b9edb60f43368766a1d000625282d59ed32f4adadf8bc23075