[INFO] fetching crate specialize 0.0.3... [INFO] testing specialize-0.0.3 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] extracting crate specialize 0.0.3 into /workspace/builds/worker-14/source [INFO] validating manifest of crates.io crate specialize 0.0.3 on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-14/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d85bd9bba9e6fb40ea4107de6f5a4a7fbfdd8765396afc2c1449d9137c7f225f [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" "d85bd9bba9e6fb40ea4107de6f5a4a7fbfdd8765396afc2c1449d9137c7f225f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d85bd9bba9e6fb40ea4107de6f5a4a7fbfdd8765396afc2c1449d9137c7f225f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d85bd9bba9e6fb40ea4107de6f5a4a7fbfdd8765396afc2c1449d9137c7f225f", kill_on_drop: false }` [INFO] [stdout] d85bd9bba9e6fb40ea4107de6f5a4a7fbfdd8765396afc2c1449d9137c7f225f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1b22601e68123da4398d08908d19c14a0124ac1771671cb8e291e0c493602219 [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" "1b22601e68123da4398d08908d19c14a0124ac1771671cb8e291e0c493602219", kill_on_drop: false }` [INFO] [stderr] Compiling specialize v0.0.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.43s [INFO] running `Command { std: "docker" "inspect" "1b22601e68123da4398d08908d19c14a0124ac1771671cb8e291e0c493602219", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b22601e68123da4398d08908d19c14a0124ac1771671cb8e291e0c493602219", kill_on_drop: false }` [INFO] [stdout] 1b22601e68123da4398d08908d19c14a0124ac1771671cb8e291e0c493602219 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d5ada11797740918faad3cb42bb48208aef437089ca93afd791e74a505a4f784 [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" "d5ada11797740918faad3cb42bb48208aef437089ca93afd791e74a505a4f784", kill_on_drop: false }` [INFO] [stderr] Compiling 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" "d5ada11797740918faad3cb42bb48208aef437089ca93afd791e74a505a4f784", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d5ada11797740918faad3cb42bb48208aef437089ca93afd791e74a505a4f784", kill_on_drop: false }` [INFO] [stdout] d5ada11797740918faad3cb42bb48208aef437089ca93afd791e74a505a4f784