[INFO] fetching crate specialize 0.0.3...
[INFO] checking specialize-0.0.3 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate specialize 0.0.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate specialize 0.0.3 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate specialize 0.0.3
[INFO] finished tweaking crates.io crate specialize 0.0.3
[INFO] tweaked toml for crates.io crate specialize 0.0.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 34faa2347707491ca1874c32240ba2f38935da61255c66d22cdc331c92212df9
[INFO] running `"docker" "start" "-a" "34faa2347707491ca1874c32240ba2f38935da61255c66d22cdc331c92212df9"`
[INFO] [stderr]     Checking specialize v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: patterns aren't allowed in methods without bodies
[INFO] [stderr]    --> src/lib.rs:594:65
[INFO] [stderr]     |
[INFO] [stderr] 594 |                 trait fn WriteTest::write_test[W: Write](&self, mut w: W) -> io::Result<()>;
[INFO] [stderr]     |                                                                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(patterns_in_fns_without_body)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #35203 <https://github.com/rust-lang/rust/issues/35203>
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `w`
[INFO] [stderr]    --> src/lib.rs:594:69
[INFO] [stderr]     |
[INFO] [stderr] 594 |                 trait fn WriteTest::write_test[W: Write](&self, mut w: W) -> io::Result<()>;
[INFO] [stderr]     |                                                                     ^ help: consider prefixing with an underscore: `_w`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:594:65
[INFO] [stderr]     |
[INFO] [stderr] 594 |                 trait fn WriteTest::write_test[W: Write](&self, mut w: W) -> io::Result<()>;
[INFO] [stderr]     |                                                                 ----^
[INFO] [stderr]     |                                                                 |
[INFO] [stderr]     |                                                                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "34faa2347707491ca1874c32240ba2f38935da61255c66d22cdc331c92212df9"`
[INFO] running `"docker" "rm" "-f" "34faa2347707491ca1874c32240ba2f38935da61255c66d22cdc331c92212df9"`
[INFO] [stdout] 34faa2347707491ca1874c32240ba2f38935da61255c66d22cdc331c92212df9