[INFO] cloning repository https://github.com/SpaceEraser/english-wiki-frequency-list
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SpaceEraser/english-wiki-frequency-list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpaceEraser%2Fenglish-wiki-frequency-list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpaceEraser%2Fenglish-wiki-frequency-list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c10f989dc1def1b2740c87b853ae4945879d6e1e
[INFO] checking SpaceEraser/english-wiki-frequency-list against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpaceEraser%2Fenglish-wiki-frequency-list" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SpaceEraser/english-wiki-frequency-list 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/SpaceEraser/english-wiki-frequency-list
[INFO] finished tweaking git repo https://github.com/SpaceEraser/english-wiki-frequency-list
[INFO] tweaked toml for git repo https://github.com/SpaceEraser/english-wiki-frequency-list written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/SpaceEraser/english-wiki-frequency-list 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded roxmltree v0.13.0
[INFO] [stderr]   Downloaded bzip2 v0.4.1
[INFO] [stderr]   Downloaded xmlparser v0.13.2
[INFO] [stderr]   Downloaded string_cache v0.8.0
[INFO] [stderr]   Downloaded dtoa-short v0.3.2
[INFO] [stderr]   Downloaded markup5ever v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 66351cb4f48af54803c16164a98540565c53dbe90801b00e171d8c1f7bf3ddc8
[INFO] running `Command { std: "docker" "start" "-a" "66351cb4f48af54803c16164a98540565c53dbe90801b00e171d8c1f7bf3ddc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66351cb4f48af54803c16164a98540565c53dbe90801b00e171d8c1f7bf3ddc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66351cb4f48af54803c16164a98540565c53dbe90801b00e171d8c1f7bf3ddc8", kill_on_drop: false }`
[INFO] [stdout] 66351cb4f48af54803c16164a98540565c53dbe90801b00e171d8c1f7bf3ddc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e15fa131e19d927e69856d6d36dc2b7d792e6a9403a153e92137869833bed20
[INFO] running `Command { std: "docker" "start" "-a" "1e15fa131e19d927e69856d6d36dc2b7d792e6a9403a153e92137869833bed20", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
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[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
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[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking ego-tree v0.6.2
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[INFO] [stderr]    Compiling proc-macro-error v0.4.12
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[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking servo_arc v0.1.1
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[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]    Compiling heck v0.3.1
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
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[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking bzip2 v0.4.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking clap v3.0.0-beta.1
[INFO] [stderr]     Checking scraper v0.12.0
[INFO] [stderr]     Checking jemallocator v0.3.2
[INFO] [stderr]     Checking english-wiki-frequency-list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `english-wiki-frequency-list` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "1e15fa131e19d927e69856d6d36dc2b7d792e6a9403a153e92137869833bed20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e15fa131e19d927e69856d6d36dc2b7d792e6a9403a153e92137869833bed20", kill_on_drop: false }`
[INFO] [stdout] 1e15fa131e19d927e69856d6d36dc2b7d792e6a9403a153e92137869833bed20
