[INFO] cloning repository https://github.com/umaYnit/rust-serial-tool [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/umaYnit/rust-serial-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FumaYnit%2Frust-serial-tool", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FumaYnit%2Frust-serial-tool'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 06f2371e14f0c9c0351a10358dd3c4eb8bc840e6 [INFO] testing umaYnit/rust-serial-tool against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FumaYnit%2Frust-serial-tool" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/umaYnit/rust-serial-tool 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 git repo https://github.com/umaYnit/rust-serial-tool [INFO] finished tweaking git repo https://github.com/umaYnit/rust-serial-tool [INFO] tweaked toml for git repo https://github.com/umaYnit/rust-serial-tool written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/umaYnit/rust-serial-tool already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 4969b938f9580e3873ec6b304239c878cb0ed767a6e0aacd1a89ea8132ac6b48 [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" "4969b938f9580e3873ec6b304239c878cb0ed767a6e0aacd1a89ea8132ac6b48", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4969b938f9580e3873ec6b304239c878cb0ed767a6e0aacd1a89ea8132ac6b48", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4969b938f9580e3873ec6b304239c878cb0ed767a6e0aacd1a89ea8132ac6b48", kill_on_drop: false }` [INFO] [stdout] 4969b938f9580e3873ec6b304239c878cb0ed767a6e0aacd1a89ea8132ac6b48 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] e127f96f88e1edba5329fab2546a9cd6b0aaf8ce58399fd405a54cb43908d42c [INFO] running `Command { std: "docker" "start" "-a" "e127f96f88e1edba5329fab2546a9cd6b0aaf8ce58399fd405a54cb43908d42c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.82 [INFO] [stderr] Compiling log v0.4.13 [INFO] [stderr] Compiling nix v0.16.1 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling crossbeam-channel v0.5.0 [INFO] [stderr] Compiling mio v0.7.7 [INFO] [stderr] Compiling signal-hook-registry v1.3.0 [INFO] [stderr] Compiling parking_lot_core v0.8.2 [INFO] [stderr] Compiling time v0.1.44 [INFO] [stderr] Compiling libudev v0.2.0 [INFO] [stderr] Compiling pbr v1.0.4 [INFO] [stderr] Compiling signal-hook v0.1.17 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling crossterm v0.19.0 [INFO] [stderr] Compiling serialport v4.0.0 [INFO] [stderr] Compiling rust_serial_tool v0.1.0 (/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(type_alias_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `type_alias_impl_trait` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(type_alias_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning 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 `rust_serial_tool` due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "e127f96f88e1edba5329fab2546a9cd6b0aaf8ce58399fd405a54cb43908d42c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e127f96f88e1edba5329fab2546a9cd6b0aaf8ce58399fd405a54cb43908d42c", kill_on_drop: false }` [INFO] [stdout] e127f96f88e1edba5329fab2546a9cd6b0aaf8ce58399fd405a54cb43908d42c