[INFO] fetching crate specialize 0.0.3... [INFO] checking specialize-0.0.3 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141 [INFO] extracting crate specialize 0.0.3 into /workspace/builds/worker-5/source [INFO] validating manifest of crates.io crate specialize 0.0.3 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-5/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5868aabda53032e9eef0d4fa6cd72c9f20d0bdff805f334fe2aac44885d40c30 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "5868aabda53032e9eef0d4fa6cd72c9f20d0bdff805f334fe2aac44885d40c30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5868aabda53032e9eef0d4fa6cd72c9f20d0bdff805f334fe2aac44885d40c30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5868aabda53032e9eef0d4fa6cd72c9f20d0bdff805f334fe2aac44885d40c30", kill_on_drop: false }` [INFO] [stdout] 5868aabda53032e9eef0d4fa6cd72c9f20d0bdff805f334fe2aac44885d40c30 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 076d74ba51b66f991b82f36ecf71436a9756cb455c34897d78b33010bb2a2c1c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "076d74ba51b66f991b82f36ecf71436a9756cb455c34897d78b33010bb2a2c1c", kill_on_drop: false }` [INFO] [stderr] Checking specialize v0.0.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:1:27 [INFO] [stdout] | [INFO] [stdout] 1 | #![cfg_attr(test, feature(specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: patterns aren't allowed in functions without bodies [INFO] [stdout] --> src/lib.rs:594:65 [INFO] [stdout] | [INFO] [stdout] 594 | trait fn WriteTest::write_test[W: Write](&self, mut w: W) -> io::Result<()>; [INFO] [stdout] | ^^^^^ help: remove `mut` from the parameter: `w` [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(patterns_in_fns_without_body)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #35203 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `w` [INFO] [stdout] --> src/lib.rs:594:69 [INFO] [stdout] | [INFO] [stdout] 594 | trait fn WriteTest::write_test[W: Write](&self, mut w: W) -> io::Result<()>; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_w` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:594:65 [INFO] [stdout] | [INFO] [stdout] 594 | trait fn WriteTest::write_test[W: Write](&self, mut w: W) -> io::Result<()>; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `specialize` due to 2 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "076d74ba51b66f991b82f36ecf71436a9756cb455c34897d78b33010bb2a2c1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "076d74ba51b66f991b82f36ecf71436a9756cb455c34897d78b33010bb2a2c1c", kill_on_drop: false }` [INFO] [stdout] 076d74ba51b66f991b82f36ecf71436a9756cb455c34897d78b33010bb2a2c1c