[INFO] fetching crate luk 0.1.0...
[INFO] testing luk-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate luk 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate luk 0.1.0
[INFO] finished tweaking crates.io crate luk 0.1.0
[INFO] tweaked toml for crates.io crate luk 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate luk 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate luk 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.10
[INFO] [stderr]   Downloaded clicolors-control v1.0.1
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[INFO] [stderr]   Downloaded serde_derive v1.0.131
[INFO] [stderr]   Downloaded ryu v1.0.6
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[INFO] [stderr]   Downloaded prettyprint v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88777c83752410de9bb03c423c19b67ec22a26a02f3036b59c6c29fbcc37874d
[INFO] running `Command { std: "docker" "start" "-a" "88777c83752410de9bb03c423c19b67ec22a26a02f3036b59c6c29fbcc37874d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88777c83752410de9bb03c423c19b67ec22a26a02f3036b59c6c29fbcc37874d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88777c83752410de9bb03c423c19b67ec22a26a02f3036b59c6c29fbcc37874d", kill_on_drop: false }`
[INFO] [stdout] 88777c83752410de9bb03c423c19b67ec22a26a02f3036b59c6c29fbcc37874d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96c6f2592e5485e38b2a6b181de98efa89448c804bf93ac2d4027d27ebd7c31a
[INFO] running `Command { std: "docker" "start" "-a" "96c6f2592e5485e38b2a6b181de98efa89448c804bf93ac2d4027d27ebd7c31a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling adler v1.0.2
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[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling crc32fast v1.3.0
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[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling line-wrap v0.1.1
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[INFO] [stderr]    Compiling error-chain v0.12.4
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[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling base64 v0.13.0
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[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling anyhow v1.0.51
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[INFO] [stderr]    Compiling darling_macro v0.10.2
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[INFO] [stderr]    Compiling onig v6.3.1
[INFO] [stderr]    Compiling syntect v4.6.0
[INFO] [stderr]    Compiling prettyprint v0.8.1
[INFO] [stderr]    Compiling luk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.29s
[INFO] running `Command { std: "docker" "inspect" "96c6f2592e5485e38b2a6b181de98efa89448c804bf93ac2d4027d27ebd7c31a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c6f2592e5485e38b2a6b181de98efa89448c804bf93ac2d4027d27ebd7c31a", kill_on_drop: false }`
[INFO] [stdout] 96c6f2592e5485e38b2a6b181de98efa89448c804bf93ac2d4027d27ebd7c31a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36a181d35c78121d3165a85ec0bba3d972a5b591cba8aa6cf015a7d1dbc58b36
[INFO] running `Command { std: "docker" "start" "-a" "36a181d35c78121d3165a85ec0bba3d972a5b591cba8aa6cf015a7d1dbc58b36", kill_on_drop: false }`
[INFO] [stderr]    Compiling luk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:54:58
[INFO] [stdout]    |
[INFO] [stdout] 54 |     find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     ------------                                         ^^^^^^^^^^^ expected `&str`, found `&mut Vec<_>`
[INFO] [stdout]    |     |
[INFO] [stdout]    |     arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note:      expected reference `&str`
[INFO] [stdout]            found mutable reference `&mut Vec<_>`
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn find_matches(content: &str, pattern: &str, lang: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^                               ----------
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `luk` (bin "luk" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "36a181d35c78121d3165a85ec0bba3d972a5b591cba8aa6cf015a7d1dbc58b36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a181d35c78121d3165a85ec0bba3d972a5b591cba8aa6cf015a7d1dbc58b36", kill_on_drop: false }`
[INFO] [stdout] 36a181d35c78121d3165a85ec0bba3d972a5b591cba8aa6cf015a7d1dbc58b36
