[INFO] fetching crate ixy 0.6.0-alpha.3...
[INFO] checking ixy-0.6.0-alpha.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ixy 0.6.0-alpha.3 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate ixy 0.6.0-alpha.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ixy 0.6.0-alpha.3
[INFO] tweaked toml for crates.io crate ixy 0.6.0-alpha.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ixy 0.6.0-alpha.3 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 ixy 0.6.0-alpha.3 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] 25f4bc3223846937188fa35c8fcb2b310958d976de1c22276ebd553b73dcb8dd
[INFO] running `Command { std: "docker" "start" "-a" "25f4bc3223846937188fa35c8fcb2b310958d976de1c22276ebd553b73dcb8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25f4bc3223846937188fa35c8fcb2b310958d976de1c22276ebd553b73dcb8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25f4bc3223846937188fa35c8fcb2b310958d976de1c22276ebd553b73dcb8dd", kill_on_drop: false }`
[INFO] [stdout] 25f4bc3223846937188fa35c8fcb2b310958d976de1c22276ebd553b73dcb8dd
[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] 120c7cb97b130d957f80464a8deed43baa6f24b74c11170b8ca56cac62cb83fc
[INFO] running `Command { std: "docker" "start" "-a" "120c7cb97b130d957f80464a8deed43baa6f24b74c11170b8ca56cac62cb83fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling ixy v0.6.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/int.rs:173:11
[INFO] [stdout]     |
[INFO] [stdout] 173 |             usize::try_from(self).ok()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 | / impl_unsigned_int!(
[INFO] [stdout] 233 | |     u8,
[INFO] [stdout] 234 | |     u16,
[INFO] [stdout] 235 | |     u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 238 | |     usize
[INFO] [stdout] 239 | | );
[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_unsigned_int` (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/int.rs:177:11
[INFO] [stdout]     |
[INFO] [stdout] 177 |             Self::try_from(value).ok()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 | / impl_unsigned_int!(
[INFO] [stdout] 233 | |     u8,
[INFO] [stdout] 234 | |     u16,
[INFO] [stdout] 235 | |     u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 238 | |     usize
[INFO] [stdout] 239 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_unsigned_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ixy` (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<usize, Infallible>
[INFO] [stdout]    --> src/int.rs:173:11
[INFO] [stdout]     |
[INFO] [stdout] 173 |             usize::try_from(self).ok()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 | / impl_unsigned_int!(
[INFO] [stdout] 233 | |     u8,
[INFO] [stdout] 234 | |     u16,
[INFO] [stdout] 235 | |     u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 238 | |     usize
[INFO] [stdout] 239 | | );
[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_unsigned_int` (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/int.rs:177:11
[INFO] [stdout]     |
[INFO] [stdout] 177 |             Self::try_from(value).ok()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 | / impl_unsigned_int!(
[INFO] [stdout] 233 | |     u8,
[INFO] [stdout] 234 | |     u16,
[INFO] [stdout] 235 | |     u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 238 | |     usize
[INFO] [stdout] 239 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_unsigned_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ixy` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "120c7cb97b130d957f80464a8deed43baa6f24b74c11170b8ca56cac62cb83fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "120c7cb97b130d957f80464a8deed43baa6f24b74c11170b8ca56cac62cb83fc", kill_on_drop: false }`
[INFO] [stdout] 120c7cb97b130d957f80464a8deed43baa6f24b74c11170b8ca56cac62cb83fc