[INFO] cloning repository https://github.com/oleynik/exercism-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oleynik/exercism-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foleynik%2Fexercism-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foleynik%2Fexercism-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 685986690747a231f4053240bd3aa78891c900c8 [INFO] testing oleynik/exercism-rust against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foleynik%2Fexercism-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/oleynik/exercism-rust [INFO] finished tweaking git repo https://github.com/oleynik/exercism-rust [INFO] tweaked toml for git repo https://github.com/oleynik/exercism-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/oleynik/exercism-rust on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/oleynik/exercism-rust 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded once_cell v1.17.0 [INFO] [stderr] Downloaded enum-iterator v1.2.0 [INFO] [stderr] Downloaded int-enum v0.5.0 [INFO] [stderr] Downloaded enum-iterator-derive v1.1.0 [INFO] [stderr] Downloaded proc-macro-crate v1.3.0 [INFO] [stderr] Downloaded proc-macro2 v1.0.50 [INFO] [stderr] Downloaded int-enum-impl v0.5.0 [INFO] [stderr] Downloaded unicode-reverse v1.0.8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 63acc16bf16f7481a187e12ee81a25ea8720424057e16c1dc320fdfd10768c7b [INFO] running `Command { std: "docker" "start" "-a" "63acc16bf16f7481a187e12ee81a25ea8720424057e16c1dc320fdfd10768c7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "63acc16bf16f7481a187e12ee81a25ea8720424057e16c1dc320fdfd10768c7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "63acc16bf16f7481a187e12ee81a25ea8720424057e16c1dc320fdfd10768c7b", kill_on_drop: false }` [INFO] [stdout] 63acc16bf16f7481a187e12ee81a25ea8720424057e16c1dc320fdfd10768c7b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] c15355781e27975e3e89e0483ba19e155ca2398741a01e1c324463d0bc6f2ca3 [INFO] running `Command { std: "docker" "start" "-a" "c15355781e27975e3e89e0483ba19e155ca2398741a01e1c324463d0bc6f2ca3", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] Compiling proc-macro2 v1.0.50 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling quote v1.0.23 [INFO] [stderr] Compiling unicode-ident v1.0.6 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling syn v1.0.107 [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling toml_datetime v0.5.1 [INFO] [stderr] Compiling once_cell v1.17.0 [INFO] [stderr] Compiling unicode-segmentation v1.10.1 [INFO] [stderr] Compiling time-core v0.1.0 [INFO] [stderr] Compiling prime_factors v1.1.0 (/opt/rustwide/workdir/prime-factors) [INFO] [stderr] Compiling sum-of-multiples v1.5.0 (/opt/rustwide/workdir/sum-of-multiples) [INFO] [stderr] Compiling magazine_cutout v0.1.0 (/opt/rustwide/workdir/magazine-cutout) [INFO] [stderr] Compiling sieve v1.1.0 (/opt/rustwide/workdir/sieve) [INFO] [stderr] Compiling luhn v1.6.1 (/opt/rustwide/workdir/luhn) [INFO] [stderr] Compiling time v0.3.17 [INFO] [stderr] Compiling rust v0.1.0 (/opt/rustwide/workdir/sandbox) [INFO] [stderr] Compiling semi_structured_logs v0.1.0 (/opt/rustwide/workdir/semi-structured-logs) [INFO] [stderr] Compiling bowling v1.2.0 (/opt/rustwide/workdir/bowling) [INFO] [stderr] Compiling allergies v1.1.0 (/opt/rustwide/workdir/allergies) [INFO] [stderr] Compiling robot-name v0.0.0 (/opt/rustwide/workdir/robot-name) [INFO] [stderr] Compiling series v0.1.0 (/opt/rustwide/workdir/series) [INFO] [stderr] Compiling unicode-reverse v1.0.8 [INFO] [stderr] Compiling saddle-points v1.3.0 (/opt/rustwide/workdir/saddle-points) [INFO] [stderr] Compiling leap v1.6.0 (/opt/rustwide/workdir/leap) [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> robot-name/src/lib.rs:42:23 [INFO] [stdout] | [INFO] [stdout] 42 | Self(unsafe { ROBOT_NAME.generate_name() }) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> robot-name/src/lib.rs:50:27 [INFO] [stdout] | [INFO] [stdout] 50 | self.0 = unsafe { ROBOT_NAME.generate_name() } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rna-transcription v1.0.0 (/opt/rustwide/workdir/rna-transcription) [INFO] [stderr] Compiling robot-simulator v2.2.0 (/opt/rustwide/workdir/robot-simulator) [INFO] [stderr] Compiling reverse_string v1.2.0 (/opt/rustwide/workdir/reverse-string) [INFO] [stderr] Compiling say v1.2.0 (/opt/rustwide/workdir/say) [INFO] [stderr] Compiling indexmap v1.9.2 [INFO] [stderr] Compiling etl v1.0.0 (/opt/rustwide/workdir/etl) [INFO] [stderr] Compiling lucians-luscious-lasagna v0.1.0 (/opt/rustwide/workdir/lucians-luscious-lasagna) [INFO] [stderr] Compiling pangram v0.0.0 (/opt/rustwide/workdir/pangram) [INFO] [stderr] Compiling grade-school v0.0.0 (/opt/rustwide/workdir/grade-school) [INFO] [stderr] Compiling protein-translation v0.1.0 (/opt/rustwide/workdir/protein-translation) [INFO] [stderr] Compiling pascals-triangle v1.5.0 (/opt/rustwide/workdir/pascals-triangle) [INFO] [stderr] Compiling hello-world v1.1.0 (/opt/rustwide/workdir/hello-world) [INFO] [stderr] Compiling hamming v2.2.0 (/opt/rustwide/workdir/hamming) [INFO] [stderr] Compiling high-scores v4.0.0 (/opt/rustwide/workdir/high-scores) [INFO] [stderr] Compiling anagram v0.0.0 (/opt/rustwide/workdir/anagram) [INFO] [stderr] Compiling gigasecond v2.0.0 (/opt/rustwide/workdir/gigasecond) [INFO] [stderr] Compiling matching-brackets v2.0.0 (/opt/rustwide/workdir/matching-brackets) [INFO] [stderr] Compiling space-age v1.2.0 (/opt/rustwide/workdir/space-age) [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/src/lib.rs:92:30 [INFO] [stdout] | [INFO] [stdout] 92 | feature(proc_macro_span, proc_macro_span_shrink) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling nom8 v0.2.0 [INFO] [stderr] Compiling armstrong_numbers v1.1.0 (/opt/rustwide/workdir/armstrong-numbers) [INFO] [stderr] Compiling assembly-line v0.1.0 (/opt/rustwide/workdir/assembly-line) [INFO] [stderr] Compiling raindrops v1.1.0 (/opt/rustwide/workdir/raindrops) [INFO] [stderr] Compiling tournament v1.4.0 (/opt/rustwide/workdir/tournament) [INFO] [stderr] Compiling wordy v1.5.0 (/opt/rustwide/workdir/wordy) [INFO] [stderr] Compiling low_power_embedded_game v0.1.0 (/opt/rustwide/workdir/low-power-embedded-game) [INFO] [stderr] Compiling short_fibonacci v0.1.0 (/opt/rustwide/workdir/short-fibonacci) [INFO] [stderr] Compiling clock v2.4.0 (/opt/rustwide/workdir/clock) [INFO] [stderr] Compiling bob v1.6.0 (/opt/rustwide/workdir/bob) [INFO] [stderr] Compiling isogram v1.3.0 (/opt/rustwide/workdir/isogram) [INFO] [stderr] Compiling parallel-letter-frequency v0.0.0 (/opt/rustwide/workdir/parallel-letter-frequency) [INFO] [stderr] Compiling health_statistics v0.1.0 (/opt/rustwide/workdir/health-statistics) [INFO] [stderr] Compiling macros v0.1.0 (/opt/rustwide/workdir/macros) [INFO] [stderr] Compiling proverb v1.1.0 (/opt/rustwide/workdir/proverb) [INFO] [stderr] Compiling queen-attack v2.2.0 (/opt/rustwide/workdir/queen-attack) [INFO] [stderr] Compiling nucleotide-count v1.3.0 (/opt/rustwide/workdir/nucleotide-count) [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] Compiling collatz_conjecture v1.2.1 (/opt/rustwide/workdir/collatz-conjecture) [INFO] [stderr] Compiling beer-song v0.0.0 (/opt/rustwide/workdir/beer-song) [INFO] [stderr] Compiling allyourbase v1.0.0 (/opt/rustwide/workdir/all-your-base) [INFO] [stderr] Compiling sublist v0.0.0 (/opt/rustwide/workdir/sublist) [INFO] [stderr] Compiling spiral-matrix v1.1.0 (/opt/rustwide/workdir/spiral-matrix) [INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "c15355781e27975e3e89e0483ba19e155ca2398741a01e1c324463d0bc6f2ca3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c15355781e27975e3e89e0483ba19e155ca2398741a01e1c324463d0bc6f2ca3", kill_on_drop: false }` [INFO] [stdout] c15355781e27975e3e89e0483ba19e155ca2398741a01e1c324463d0bc6f2ca3