[INFO] crate cluproccmdline 0.1.5 is already in cache
[INFO] testing cluproccmdline-0.1.5 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate cluproccmdline 0.1.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cluproccmdline 0.1.5 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cluproccmdline 0.1.5
[INFO] finished tweaking crates.io crate cluproccmdline 0.1.5
[INFO] tweaked toml for crates.io crate cluproccmdline 0.1.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] decf4c957507bb343383b33eda5f627641df9bd499ed4dae9d0ee79179354a83
[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" "decf4c957507bb343383b33eda5f627641df9bd499ed4dae9d0ee79179354a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "decf4c957507bb343383b33eda5f627641df9bd499ed4dae9d0ee79179354a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "decf4c957507bb343383b33eda5f627641df9bd499ed4dae9d0ee79179354a83", kill_on_drop: false }`
[INFO] [stdout] decf4c957507bb343383b33eda5f627641df9bd499ed4dae9d0ee79179354a83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31fd4e9335ebc81c2ed936a639ca3282900558bacbb08439e27760a1459797b7
[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" "31fd4e9335ebc81c2ed936a639ca3282900558bacbb08439e27760a1459797b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling cluproccmdline v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | #![feature(test)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/iter/two.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |         'begin: while let Some(a) = self.iter.next() {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/iter/mod.rs:41:3
[INFO] [stdout]    |
[INFO] [stdout] 41 |         'begin: while let Some(a) = self.iter.next() {
[INFO] [stdout]    |         ^^^^^^
[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 `cluproccmdline`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "31fd4e9335ebc81c2ed936a639ca3282900558bacbb08439e27760a1459797b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31fd4e9335ebc81c2ed936a639ca3282900558bacbb08439e27760a1459797b7", kill_on_drop: false }`
[INFO] [stdout] 31fd4e9335ebc81c2ed936a639ca3282900558bacbb08439e27760a1459797b7