[INFO] cloning repository https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheJakeSchmidt%2Fwikipedia-minus-wikipedians", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheJakeSchmidt%2Fwikipedia-minus-wikipedians'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60410fa53241a78411821b7d76fb9ba9488043bf
[INFO] testing TheJakeSchmidt/wikipedia-minus-wikipedians against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheJakeSchmidt%2Fwikipedia-minus-wikipedians" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians
[INFO] finished tweaking git repo https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians
[INFO] tweaked toml for git repo https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/TheJakeSchmidt/wikipedia-minus-wikipedians already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wepoll-sys v3.0.0
[INFO] [stderr]   Downloaded polling v2.0.1
[INFO] [stderr]   Downloaded log4rs v0.13.0
[INFO] [stderr]   Downloaded tempfile v1.1.3
[INFO] [stderr]   Downloaded redis v0.17.0
[INFO] [stderr]   Downloaded async-io v1.1.10
[INFO] [stderr]   Downloaded tendril v0.1.6
[INFO] [stderr]   Downloaded html5ever v0.2.11
[INFO] [stderr]   Downloaded rc v0.1.1
[INFO] [stderr]   Downloaded regex_macros v0.2.0
[INFO] [stderr]   Downloaded html5ever_dom_sink v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc4b0872e4dd4a8a84b1a6da88d75e9c3f335d6aa8b7694d479742c65893fb84
[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" "cc4b0872e4dd4a8a84b1a6da88d75e9c3f335d6aa8b7694d479742c65893fb84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc4b0872e4dd4a8a84b1a6da88d75e9c3f335d6aa8b7694d479742c65893fb84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc4b0872e4dd4a8a84b1a6da88d75e9c3f335d6aa8b7694d479742c65893fb84", kill_on_drop: false }`
[INFO] [stdout] cc4b0872e4dd4a8a84b1a6da88d75e9c3f335d6aa8b7694d479742c65893fb84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a575370dceadcd54c634fb08d003ee2e3ee506ca90a1cb51080eeeb6288526c3
[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" "a575370dceadcd54c634fb08d003ee2e3ee506ca90a1cb51080eeeb6288526c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling fastrand v1.4.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling async-task v4.0.2
[INFO] [stderr]    Compiling vec-arena v1.0.0
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling rc v0.1.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling futures-channel v0.3.6
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling serde_yaml v0.8.13
[INFO] [stderr]    Compiling futures-lite v1.11.1
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling tendril v0.1.6
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling tempfile v1.1.3
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling string_cache v0.2.29
[INFO] [stderr]    Compiling html5ever v0.2.11
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling polling v2.0.1
[INFO] [stderr]    Compiling tracing v0.1.21
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling async-io v1.1.10
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling num-complex v0.3.0
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling serde-value v0.6.0
[INFO] [stderr]    Compiling async-global-executor v1.4.0
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling async-std v1.6.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.2.11/src/lib.rs:522:34
[INFO] [stdout]     |
[INFO] [stdout] 522 | #![cfg_attr(feature = "pattern", feature(pattern))]
[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 `regex`.
[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" "a575370dceadcd54c634fb08d003ee2e3ee506ca90a1cb51080eeeb6288526c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a575370dceadcd54c634fb08d003ee2e3ee506ca90a1cb51080eeeb6288526c3", kill_on_drop: false }`
[INFO] [stdout] a575370dceadcd54c634fb08d003ee2e3ee506ca90a1cb51080eeeb6288526c3
