[INFO] fetching crate specialize 0.0.3... [INFO] testing specialize-0.0.3 against 1.60.0 for beta-1.61-1 [INFO] extracting crate specialize 0.0.3 into /workspace/builds/worker-73/source [INFO] validating manifest of crates.io crate specialize 0.0.3 on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-73/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 627f6affcbf1fd8f2cd32f4729339715ce36338176a2845484bdbc3298893074 [INFO] running `Command { std: "docker" "start" "-a" "627f6affcbf1fd8f2cd32f4729339715ce36338176a2845484bdbc3298893074", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "627f6affcbf1fd8f2cd32f4729339715ce36338176a2845484bdbc3298893074", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "627f6affcbf1fd8f2cd32f4729339715ce36338176a2845484bdbc3298893074", kill_on_drop: false }` [INFO] [stdout] 627f6affcbf1fd8f2cd32f4729339715ce36338176a2845484bdbc3298893074 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] eda3271c943a34c2526288fd73f00e85dae963de0d914f3aa8fefb6855cdf6a3 [INFO] running `Command { std: "docker" "start" "-a" "eda3271c943a34c2526288fd73f00e85dae963de0d914f3aa8fefb6855cdf6a3", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling specialize v0.0.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.94s [INFO] running `Command { std: "docker" "inspect" "eda3271c943a34c2526288fd73f00e85dae963de0d914f3aa8fefb6855cdf6a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eda3271c943a34c2526288fd73f00e85dae963de0d914f3aa8fefb6855cdf6a3", kill_on_drop: false }` [INFO] [stdout] eda3271c943a34c2526288fd73f00e85dae963de0d914f3aa8fefb6855cdf6a3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 04b9a1b0ccb3063b03518ec4e8fe4521410cb13fa60f75320b700d29e5d9048b [INFO] running `Command { std: "docker" "start" "-a" "04b9a1b0ccb3063b03518ec4e8fe4521410cb13fa60f75320b700d29e5d9048b", kill_on_drop: false }` [INFO] [stderr] Compiling specialize v0.0.3 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | #![cfg_attr(test, feature(specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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] warning: 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: `#[warn(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] error: aborting due to previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `specialize` due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "04b9a1b0ccb3063b03518ec4e8fe4521410cb13fa60f75320b700d29e5d9048b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04b9a1b0ccb3063b03518ec4e8fe4521410cb13fa60f75320b700d29e5d9048b", kill_on_drop: false }` [INFO] [stdout] 04b9a1b0ccb3063b03518ec4e8fe4521410cb13fa60f75320b700d29e5d9048b