[INFO] fetching crate ix-rs 0.8.0...
[INFO] checking ix-rs-0.8.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ix-rs 0.8.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ix-rs 0.8.0
[INFO] finished tweaking crates.io crate ix-rs 0.8.0
[INFO] tweaked toml for crates.io crate ix-rs 0.8.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ix-rs 0.8.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 38 packages to latest compatible versions
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6fdb333a363282cdb1979bb6a3120e884369426b704ec48f25d15641c3397195
[INFO] running `Command { std: "docker" "start" "-a" "6fdb333a363282cdb1979bb6a3120e884369426b704ec48f25d15641c3397195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fdb333a363282cdb1979bb6a3120e884369426b704ec48f25d15641c3397195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fdb333a363282cdb1979bb6a3120e884369426b704ec48f25d15641c3397195", kill_on_drop: false }`
[INFO] [stdout] 6fdb333a363282cdb1979bb6a3120e884369426b704ec48f25d15641c3397195
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fb733184c6467891447a28ae867e591c1c27317d156428a9ce42de7e5b07cc27
[INFO] running `Command { std: "docker" "start" "-a" "fb733184c6467891447a28ae867e591c1c27317d156428a9ce42de7e5b07cc27", kill_on_drop: false }`
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking ix-rs v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     usize::try_from(self - min).ok()
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 | impl_ix_numeric!(u8, u16, u32, u64, u128, i8, i16, i32, i64, i128, usize, isize);
[INFO] [stdout]     | -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `impl_ix_numeric` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:171:21
[INFO] [stdout]     |
[INFO] [stdout] 171 |                     usize::try_from(max - min)
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 | impl_ix_numeric!(u8, u16, u32, u64, u128, i8, i16, i32, i64, i128, usize, isize);
[INFO] [stdout]     | -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_ix_numeric` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ix-rs` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fb733184c6467891447a28ae867e591c1c27317d156428a9ce42de7e5b07cc27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb733184c6467891447a28ae867e591c1c27317d156428a9ce42de7e5b07cc27", kill_on_drop: false }`
[INFO] [stdout] fb733184c6467891447a28ae867e591c1c27317d156428a9ce42de7e5b07cc27