[INFO] fetching crate cpc 3.0.0...
[INFO] checking cpc-3.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cpc 3.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate cpc 3.0.0
[INFO] finished tweaking crates.io crate cpc 3.0.0
[INFO] tweaked toml for crates.io crate cpc 3.0.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cpc 3.0.0 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 cpc 3.0.0 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] b4fe1226a512598df8daa603439660f0227b5c2d985a2a18c33038f95424e55f
[INFO] running `Command { std: "docker" "start" "-a" "b4fe1226a512598df8daa603439660f0227b5c2d985a2a18c33038f95424e55f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4fe1226a512598df8daa603439660f0227b5c2d985a2a18c33038f95424e55f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4fe1226a512598df8daa603439660f0227b5c2d985a2a18c33038f95424e55f", kill_on_drop: false }`
[INFO] [stdout] b4fe1226a512598df8daa603439660f0227b5c2d985a2a18c33038f95424e55f
[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] ae760d7a5f23c3e2b0f4d709184382ea5f9fe186ba4b53a6cf39dec25b1c535a
[INFO] running `Command { std: "docker" "start" "-a" "ae760d7a5f23c3e2b0f4d709184382ea5f9fe186ba4b53a6cf39dec25b1c535a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fastnum v0.2.8
[INFO] [stderr]     Checking bnum v0.12.1
[INFO] [stderr]     Checking web-time v1.1.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking cpc v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Decimal<4>, Infallible>
[INFO] [stdout]    --> src/units.rs:759:13
[INFO] [stdout]     |
[INFO] [stdout] 759 |     let left = D256::try_from(left.transmute()).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<Decimal<4>, Infallible>
[INFO] [stdout]    --> src/units.rs:760:14
[INFO] [stdout]     |
[INFO] [stdout] 760 |     let right = D256::try_from(right.transmute()).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpc` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Decimal<4>, Infallible>
[INFO] [stdout]    --> src/units.rs:759:13
[INFO] [stdout]     |
[INFO] [stdout] 759 |     let left = D256::try_from(left.transmute()).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<Decimal<4>, Infallible>
[INFO] [stdout]    --> src/units.rs:760:14
[INFO] [stdout]     |
[INFO] [stdout] 760 |     let right = D256::try_from(right.transmute()).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpc` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ae760d7a5f23c3e2b0f4d709184382ea5f9fe186ba4b53a6cf39dec25b1c535a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae760d7a5f23c3e2b0f4d709184382ea5f9fe186ba4b53a6cf39dec25b1c535a", kill_on_drop: false }`
[INFO] [stdout] ae760d7a5f23c3e2b0f4d709184382ea5f9fe186ba4b53a6cf39dec25b1c535a