[INFO] cloning repository https://github.com/sinnerschrader/rust-exercism-cubicle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinnerschrader/rust-exercism-cubicle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnerschrader%2Frust-exercism-cubicle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnerschrader%2Frust-exercism-cubicle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7206a04271a81f758533b7431ae38a0466340ca7
[INFO] checking sinnerschrader/rust-exercism-cubicle against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnerschrader%2Frust-exercism-cubicle" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sinnerschrader/rust-exercism-cubicle
[INFO] finished tweaking git repo https://github.com/sinnerschrader/rust-exercism-cubicle
[INFO] tweaked toml for git repo https://github.com/sinnerschrader/rust-exercism-cubicle written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sinnerschrader/rust-exercism-cubicle on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sinnerschrader/rust-exercism-cubicle 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v0.6.11
[INFO] [stderr]   Downloaded failure_derive v0.1.5
[INFO] [stderr]   Downloaded rustc-demangle v0.1.13
[INFO] [stderr]   Downloaded proc-macro2 v0.4.27
[INFO] [stderr]   Downloaded cfg-if v0.1.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.51
[INFO] [stderr]   Downloaded autocfg v0.1.2
[INFO] [stderr]   Downloaded maplit v1.0.1
[INFO] [stderr]   Downloaded synstructure v0.10.1
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded cc v1.0.32
[INFO] [stderr]   Downloaded backtrace v0.3.14
[INFO] [stderr]   Downloaded syn v0.15.29
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded backtrace-sys v0.1.28
[INFO] [stderr]   Downloaded libc v0.2.50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bed20c6b84a73cc1c5bccde7d85853e51fa80d8eba6fb15e7032f78d7a035378
[INFO] running `Command { std: "docker" "start" "-a" "bed20c6b84a73cc1c5bccde7d85853e51fa80d8eba6fb15e7032f78d7a035378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bed20c6b84a73cc1c5bccde7d85853e51fa80d8eba6fb15e7032f78d7a035378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bed20c6b84a73cc1c5bccde7d85853e51fa80d8eba6fb15e7032f78d7a035378", kill_on_drop: false }`
[INFO] [stdout] bed20c6b84a73cc1c5bccde7d85853e51fa80d8eba6fb15e7032f78d7a035378
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea8cca43b9ec41aa49e409a1dd4c2dfd9a382575f70ced6694080912e49b3484
[INFO] running `Command { std: "docker" "start" "-a" "ea8cca43b9ec41aa49e409a1dd4c2dfd9a382575f70ced6694080912e49b3484", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling cc v1.0.32
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking parallel-letter-frequency v0.0.0 (/opt/rustwide/workdir/exercises/parallel-letter-frequency)
[INFO] [stderr]     Checking bob v1.4.0 (/opt/rustwide/workdir/exercises/bob)
[INFO] [stderr]     Checking allergies v1.1.0 (/opt/rustwide/workdir/exercises/allergies)
[INFO] [stderr]     Checking series v0.1.0 (/opt/rustwide/workdir/exercises/series)
[INFO] [stderr]     Checking luhn-from v0.0.0 (/opt/rustwide/workdir/exercises/luhn-from)
[INFO] [stderr]     Checking book_store v1.3.0 (/opt/rustwide/workdir/exercises/book-store)
[INFO] [stderr]     Checking rail_fence_cipher v1.1.0 (/opt/rustwide/workdir/exercises/rail-fence-cipher)
[INFO] [stderr]     Checking dot-dsl v0.1.0 (/opt/rustwide/workdir/exercises/dot-dsl)
[INFO] [stderr]     Checking variable-length-quantity v1.2.0 (/opt/rustwide/workdir/exercises/variable-length-quantity)
[INFO] [stderr]     Checking run-length-encoding v1.1.0 (/opt/rustwide/workdir/exercises/run-length-encoding)
[INFO] [stderr]     Checking space-age v1.1.0 (/opt/rustwide/workdir/exercises/space-age)
[INFO] [stderr]     Checking diamond v1.1.0 (/opt/rustwide/workdir/exercises/diamond)
[INFO] [stderr]     Checking luhn v1.3.0 (/opt/rustwide/workdir/exercises/luhn)
[INFO] [stderr]     Checking poker v1.1.0 (/opt/rustwide/workdir/exercises/poker)
[INFO] [stderr]     Checking macros v0.1.0 (/opt/rustwide/workdir/exercises/macros)
[INFO] [stderr]     Checking grade-school v0.0.0 (/opt/rustwide/workdir/exercises/grade-school)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> exercises/dot-dsl/src/lib.rs:74:73
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     self.attrs.get(&String::from(key)).map(|value| value.clone())
[INFO] [stdout]    |                                                                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hamming v2.2.0 (/opt/rustwide/workdir/exercises/hamming)
[INFO] [stderr]     Checking isbn-verifier v2.7.0 (/opt/rustwide/workdir/exercises/isbn-verifier)
[INFO] [stderr]     Checking nth_prime v2.1.0 (/opt/rustwide/workdir/exercises/nth-prime)
[INFO] [stderr]     Checking atbash-cipher v1.1.0 (/opt/rustwide/workdir/exercises/atbash-cipher)
[INFO] [stderr]     Checking saddle-points v1.3.0 (/opt/rustwide/workdir/exercises/saddle-points)
[INFO] [stderr]     Checking isogram v1.3.0 (/opt/rustwide/workdir/exercises/isogram)
[INFO] [stderr]     Checking simple_linked_list v0.1.0 (/opt/rustwide/workdir/exercises/simple-linked-list)
[INFO] [stderr]     Checking custom-set v1.0.1 (/opt/rustwide/workdir/exercises/custom-set)
[INFO] [stderr]     Checking leap v1.4.0 (/opt/rustwide/workdir/exercises/leap)
[INFO] [stderr]     Checking two-bucket v1.4.0 (/opt/rustwide/workdir/exercises/two-bucket)
[INFO] [stderr]     Checking anagram v0.0.0 (/opt/rustwide/workdir/exercises/anagram)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> exercises/nth-prime/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking twofer v1.2.0 (/opt/rustwide/workdir/exercises/two-fer)
[INFO] [stderr]     Checking sublist v0.0.0 (/opt/rustwide/workdir/exercises/sublist)
[INFO] [stderr]     Checking pangram v0.0.0 (/opt/rustwide/workdir/exercises/pangram)
[INFO] [stderr]     Checking minesweeper v1.1.0 (/opt/rustwide/workdir/exercises/minesweeper)
[INFO] [stderr]     Checking binary-search v1.3.0 (/opt/rustwide/workdir/exercises/binary-search)
[INFO] [stderr]     Checking prime_factors v1.1.0 (/opt/rustwide/workdir/exercises/prime-factors)
[INFO] [stderr]     Checking crypto-square v0.1.0 (/opt/rustwide/workdir/exercises/crypto-square)
[INFO] [stderr]     Checking bowling v1.2.0 (/opt/rustwide/workdir/exercises/bowling)
[INFO] [stderr]     Checking acronym v1.0.0 (/opt/rustwide/workdir/exercises/acronym)
[INFO] [stderr] error: could not compile `nth_prime` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ea8cca43b9ec41aa49e409a1dd4c2dfd9a382575f70ced6694080912e49b3484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea8cca43b9ec41aa49e409a1dd4c2dfd9a382575f70ced6694080912e49b3484", kill_on_drop: false }`
[INFO] [stdout] ea8cca43b9ec41aa49e409a1dd4c2dfd9a382575f70ced6694080912e49b3484
