[INFO] fetching crate stutter-rs 0.1.1... [INFO] testing stutter-rs-0.1.1 against 1.55.0 for beta-1.56-1 [INFO] extracting crate stutter-rs 0.1.1 into /workspace/builds/worker-40/source [INFO] validating manifest of crates.io crate stutter-rs 0.1.1 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate stutter-rs 0.1.1 [INFO] finished tweaking crates.io crate stutter-rs 0.1.1 [INFO] tweaked toml for crates.io crate stutter-rs 0.1.1 written to /workspace/builds/worker-40/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d9be11de3e6fa1ec272e10a2c5cf5d20824bf296fe7d012eea7a09eb14a79912 [INFO] running `Command { std: "docker" "start" "-a" "d9be11de3e6fa1ec272e10a2c5cf5d20824bf296fe7d012eea7a09eb14a79912", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d9be11de3e6fa1ec272e10a2c5cf5d20824bf296fe7d012eea7a09eb14a79912", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d9be11de3e6fa1ec272e10a2c5cf5d20824bf296fe7d012eea7a09eb14a79912", kill_on_drop: false }` [INFO] [stdout] d9be11de3e6fa1ec272e10a2c5cf5d20824bf296fe7d012eea7a09eb14a79912 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c267f9380ecc9dfded2cd0717f48d0e54dd847135c17aea32314430eddf76cf7 [INFO] running `Command { std: "docker" "start" "-a" "c267f9380ecc9dfded2cd0717f48d0e54dd847135c17aea32314430eddf76cf7", kill_on_drop: false }` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling cactus v1.0.6 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling colored v1.9.3 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Compiling stutter-rs v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(box_syntax, box_patterns, fn_traits, nll, iterator_step_by)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/eval/builtins/static_functions.rs:6:21 [INFO] [stdout] | [INFO] [stdout] 6 | pub type StaticFn = Fn(Vec) -> Value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec) -> Value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/eval/builtins/language_functions.rs:7:23 [INFO] [stdout] | [INFO] [stdout] 7 | pub type LanguageFn = Fn(Vec, &mut CallStack) -> Value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec, &mut CallStack) -> Value` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [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 `stutter-rs` due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "c267f9380ecc9dfded2cd0717f48d0e54dd847135c17aea32314430eddf76cf7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c267f9380ecc9dfded2cd0717f48d0e54dd847135c17aea32314430eddf76cf7", kill_on_drop: false }` [INFO] [stdout] c267f9380ecc9dfded2cd0717f48d0e54dd847135c17aea32314430eddf76cf7