[INFO] cloning repository https://github.com/OptimisticPeach/matset
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OptimisticPeach/matset" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOptimisticPeach%2Fmatset", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOptimisticPeach%2Fmatset'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] badbec5f671e9aabce646f01037091e2ab51e6cd
[INFO] checking OptimisticPeach/matset 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%2FOptimisticPeach%2Fmatset" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/OptimisticPeach/matset
[INFO] finished tweaking git repo https://github.com/OptimisticPeach/matset
[INFO] tweaked toml for git repo https://github.com/OptimisticPeach/matset written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/OptimisticPeach/matset 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/OptimisticPeach/matset 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 44381c15ac19526e3fad3ad149c6b48782954ae0c5844967d89a8644ddf9db76
[INFO] running `Command { std: "docker" "start" "-a" "44381c15ac19526e3fad3ad149c6b48782954ae0c5844967d89a8644ddf9db76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44381c15ac19526e3fad3ad149c6b48782954ae0c5844967d89a8644ddf9db76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44381c15ac19526e3fad3ad149c6b48782954ae0c5844967d89a8644ddf9db76", kill_on_drop: false }`
[INFO] [stdout] 44381c15ac19526e3fad3ad149c6b48782954ae0c5844967d89a8644ddf9db76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 007358b122db22696cae459917e3ef68084e440bfef3048d0b907c96698dac62
[INFO] running `Command { std: "docker" "start" "-a" "007358b122db22696cae459917e3ef68084e440bfef3048d0b907c96698dac62", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling venial v0.5.0
[INFO] [stderr]    Compiling wasm-minimal-protocol v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking matset v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Rational, Infallible>
[INFO] [stdout]    --> src/interp/value.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 |         Rational::try_from(value).unwrap().into()
[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<Rational, Infallible>
[INFO] [stdout]    --> src/interp/value.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 |         Rational::try_from(value).unwrap().into()
[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 `matset` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `matset` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "007358b122db22696cae459917e3ef68084e440bfef3048d0b907c96698dac62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007358b122db22696cae459917e3ef68084e440bfef3048d0b907c96698dac62", kill_on_drop: false }`
[INFO] [stdout] 007358b122db22696cae459917e3ef68084e440bfef3048d0b907c96698dac62
