[INFO] cloning repository https://github.com/rschifflin/rust-pubsub [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rschifflin/rust-pubsub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frschifflin%2Frust-pubsub", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frschifflin%2Frust-pubsub'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b07e4f397f298b5bfc7e977b2a18db0a64d010e1 [INFO] testing rschifflin/rust-pubsub against 1.49.0 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frschifflin%2Frust-pubsub" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rschifflin/rust-pubsub on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rschifflin/rust-pubsub [INFO] finished tweaking git repo https://github.com/rschifflin/rust-pubsub [INFO] tweaked toml for git repo https://github.com/rschifflin/rust-pubsub written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/rschifflin/rust-pubsub already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] b74d930028c1849722037b73ca159db38d76bb0028c538477488f692ba0391ea [INFO] running `Command { std: "docker" "start" "-a" "b74d930028c1849722037b73ca159db38d76bb0028c538477488f692ba0391ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b74d930028c1849722037b73ca159db38d76bb0028c538477488f692ba0391ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b74d930028c1849722037b73ca159db38d76bb0028c538477488f692ba0391ea", kill_on_drop: false }` [INFO] [stdout] b74d930028c1849722037b73ca159db38d76bb0028c538477488f692ba0391ea [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] abbb8e30411df1f2fa54350ef1dad1edd58b33bdb5c4ec03e10aa5c82f580845 [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" "abbb8e30411df1f2fa54350ef1dad1edd58b33bdb5c4ec03e10aa5c82f580845", kill_on_drop: false }` [INFO] [stderr] Compiling pubsub v0.0.1 (/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(std_misc)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0369]: cannot add `&[Event]` to `Vec>` [INFO] [stdout] --> src/lib.rs:49:33 [INFO] [stdout] | [INFO] [stdout] 49 | self.event_queue = head + &*tail; [INFO] [stdout] | ---- ^ ------ &[Event] [INFO] [stdout] | | [INFO] [stdout] | Vec> [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0369, E0554. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0369`. [INFO] [stdout] [INFO] [stderr] error: could not compile `pubsub` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "abbb8e30411df1f2fa54350ef1dad1edd58b33bdb5c4ec03e10aa5c82f580845", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "abbb8e30411df1f2fa54350ef1dad1edd58b33bdb5c4ec03e10aa5c82f580845", kill_on_drop: false }` [INFO] [stdout] abbb8e30411df1f2fa54350ef1dad1edd58b33bdb5c4ec03e10aa5c82f580845