[INFO] fetching crate porter-stemmer 0.1.2...
[INFO] checking porter-stemmer-0.1.2 against beta for pr-78714
[INFO] extracting crate porter-stemmer 0.1.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate porter-stemmer 0.1.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate porter-stemmer 0.1.2
[INFO] finished tweaking crates.io crate porter-stemmer 0.1.2
[INFO] tweaked toml for crates.io crate porter-stemmer 0.1.2 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] b7746393e9853cf171699db970fb47973572897eaf010379829c584bd7c2f07f
[INFO] running `Command { std: "docker" "start" "-a" "b7746393e9853cf171699db970fb47973572897eaf010379829c584bd7c2f07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7746393e9853cf171699db970fb47973572897eaf010379829c584bd7c2f07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7746393e9853cf171699db970fb47973572897eaf010379829c584bd7c2f07f", kill_on_drop: false }`
[INFO] [stdout] b7746393e9853cf171699db970fb47973572897eaf010379829c584bd7c2f07f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4006bb373fad40ef9822effea24a1b4ef44b3a2e8199c1c81c46c27edf9b3105
[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" "4006bb373fad40ef9822effea24a1b4ef44b3a2e8199c1c81c46c27edf9b3105", kill_on_drop: false }`
[INFO] [stderr]     Checking porter-stemmer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `UnicodeSegmentation` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:670:13
[INFO] [stdout]     |
[INFO] [stdout] 647 |     use super::*;
[INFO] [stdout]     |         -------- the item `UnicodeSegmentation` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 670 |         use unicode_segmentation::UnicodeSegmentation;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/basic.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `porter-stemmer`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4006bb373fad40ef9822effea24a1b4ef44b3a2e8199c1c81c46c27edf9b3105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4006bb373fad40ef9822effea24a1b4ef44b3a2e8199c1c81c46c27edf9b3105", kill_on_drop: false }`
[INFO] [stdout] 4006bb373fad40ef9822effea24a1b4ef44b3a2e8199c1c81c46c27edf9b3105