[INFO] fetching crate usize_cast 1.1.0...
[INFO] checking usize_cast-1.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate usize_cast 1.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate usize_cast 1.1.0
[INFO] finished tweaking crates.io crate usize_cast 1.1.0
[INFO] tweaked toml for crates.io crate usize_cast 1.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate usize_cast 1.1.0 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] 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] 75968a1928b4e7851f5bbe2975f4e0cf2b5baa975b199bdf20725b3cccfe7fb3
[INFO] running `Command { std: "docker" "start" "-a" "75968a1928b4e7851f5bbe2975f4e0cf2b5baa975b199bdf20725b3cccfe7fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75968a1928b4e7851f5bbe2975f4e0cf2b5baa975b199bdf20725b3cccfe7fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75968a1928b4e7851f5bbe2975f4e0cf2b5baa975b199bdf20725b3cccfe7fb3", kill_on_drop: false }`
[INFO] [stdout] 75968a1928b4e7851f5bbe2975f4e0cf2b5baa975b199bdf20725b3cccfe7fb3
[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] bde4492f4d36e4f58601f982663ed1b56a08ee92d4f9f8bf159f28e4d5fd09a7
[INFO] running `Command { std: "docker" "start" "-a" "bde4492f4d36e4f58601f982663ed1b56a08ee92d4f9f8bf159f28e4d5fd09a7", kill_on_drop: false }`
[INFO] [stderr]     Checking usize_cast v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:157:68
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         assert_eq!($iux::max_value().into_usize(), usize::try_from($iux::max_value()).unwrap());
[INFO] [stdout]     |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_x!("64", u64, i64, into { (u32, i32), (u16, i16) }, from { (u128, i128) });
[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_x` (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<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:159:68
[INFO] [stdout]     |
[INFO] [stdout] 159 |                         assert_eq!($iix::max_value().into_isize(), isize::try_from($iix::max_value()).unwrap());
[INFO] [stdout]     |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_x!("64", u64, i64, into { (u32, i32), (u16, i16) }, from { (u128, i128) });
[INFO] [stdout]     | ------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_x` (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<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:160:68
[INFO] [stdout]     |
[INFO] [stdout] 160 |                         assert_eq!($iix::min_value().into_isize(), isize::try_from($iix::min_value()).unwrap());
[INFO] [stdout]     |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_x!("64", u64, i64, into { (u32, i32), (u16, i16) }, from { (u128, i128) });
[INFO] [stdout]     | ------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_x` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `usize_cast` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "bde4492f4d36e4f58601f982663ed1b56a08ee92d4f9f8bf159f28e4d5fd09a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bde4492f4d36e4f58601f982663ed1b56a08ee92d4f9f8bf159f28e4d5fd09a7", kill_on_drop: false }`
[INFO] [stdout] bde4492f4d36e4f58601f982663ed1b56a08ee92d4f9f8bf159f28e4d5fd09a7