[INFO] fetching crate libspecr 0.1.34...
[INFO] checking libspecr-0.1.34 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate libspecr 0.1.34 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate libspecr 0.1.34
[INFO] finished tweaking crates.io crate libspecr 0.1.34
[INFO] tweaked toml for crates.io crate libspecr 0.1.34 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libspecr 0.1.34 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 libspecr 0.1.34 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] 0508330a2d2a613f2c63984475959b68861cf05d7164f8c3f0b698954b9b4929
[INFO] running `Command { std: "docker" "start" "-a" "0508330a2d2a613f2c63984475959b68861cf05d7164f8c3f0b698954b9b4929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0508330a2d2a613f2c63984475959b68861cf05d7164f8c3f0b698954b9b4929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0508330a2d2a613f2c63984475959b68861cf05d7164f8c3f0b698954b9b4929", kill_on_drop: false }`
[INFO] [stdout] 0508330a2d2a613f2c63984475959b68861cf05d7164f8c3f0b698954b9b4929
[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] 95b273a609c471217c9d0d3e611a9b46eda481e5f5125009d5c0a41c6f718faf
[INFO] running `Command { std: "docker" "start" "-a" "95b273a609c471217c9d0d3e611a9b46eda481e5f5125009d5c0a41c6f718faf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]    Compiling gccompat-derive v0.1.2
[INFO] [stderr]     Checking libspecr v0.1.34 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]   --> src/int/to.rs:16:41
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     Int(IntInner::Small(self.try_into().unwrap()))
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 | setup!(u8, i8, u16, i16, u32, i32, u64, 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 `setup` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libspecr` (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<i128, Infallible>
[INFO] [stdout]   --> src/int/to.rs:16:41
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     Int(IntInner::Small(self.try_into().unwrap()))
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 | setup!(u8, i8, u16, i16, u32, i32, u64, 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 `setup` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libspecr` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "95b273a609c471217c9d0d3e611a9b46eda481e5f5125009d5c0a41c6f718faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95b273a609c471217c9d0d3e611a9b46eda481e5f5125009d5c0a41c6f718faf", kill_on_drop: false }`
[INFO] [stdout] 95b273a609c471217c9d0d3e611a9b46eda481e5f5125009d5c0a41c6f718faf
