[INFO] cloning repository https://github.com/JosephFerano/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/JosephFerano/exercism-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Fexercism-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Fexercism-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 582c10b17f314eef39a2b4ad49b227ed12447785
[INFO] checking JosephFerano/exercism-rust against master#4e1f5d90bca45207605a88e39b1f76abcdb85d2f for pr-123962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Fexercism-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosephFerano/exercism-rust on toolchain 4e1f5d90bca45207605a88e39b1f76abcdb85d2f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e1f5d90bca45207605a88e39b1f76abcdb85d2f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JosephFerano/exercism-rust
[INFO] finished tweaking git repo https://github.com/JosephFerano/exercism-rust
[INFO] tweaked toml for git repo https://github.com/JosephFerano/exercism-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JosephFerano/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" "+4e1f5d90bca45207605a88e39b1f76abcdb85d2f" "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
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking JosephFerano/exercism-rust against try#035f40fb95ac1c79b50f07e65650460f3d11e207 for pr-123962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Fexercism-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosephFerano/exercism-rust on toolchain 035f40fb95ac1c79b50f07e65650460f3d11e207
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JosephFerano/exercism-rust
[INFO] finished tweaking git repo https://github.com/JosephFerano/exercism-rust
[INFO] tweaked toml for git repo https://github.com/JosephFerano/exercism-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JosephFerano/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" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "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]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking JosephFerano/exercism-rust against try#035f40fb95ac1c79b50f07e65650460f3d11e207 for pr-123962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Fexercism-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosephFerano/exercism-rust on toolchain 035f40fb95ac1c79b50f07e65650460f3d11e207
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JosephFerano/exercism-rust
[INFO] finished tweaking git repo https://github.com/JosephFerano/exercism-rust
[INFO] tweaked toml for git repo https://github.com/JosephFerano/exercism-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JosephFerano/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" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-iterator-derive v1.1.0
[INFO] [stderr]   Downloaded int-enum-impl v0.5.0
[INFO] [stderr]   Downloaded enum-iterator v1.2.0
[INFO] [stderr]   Downloaded int-enum v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d80d4ae104808c56e906192bb7fb21be203b53219550ddc575065f1096803c9
[INFO] running `Command { std: "docker" "start" "-a" "8d80d4ae104808c56e906192bb7fb21be203b53219550ddc575065f1096803c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d80d4ae104808c56e906192bb7fb21be203b53219550ddc575065f1096803c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d80d4ae104808c56e906192bb7fb21be203b53219550ddc575065f1096803c9", kill_on_drop: false }`
[INFO] [stdout] 8d80d4ae104808c56e906192bb7fb21be203b53219550ddc575065f1096803c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9839853d8cde220d95b72b8d907fc687b835d51653a08c2482a1ac4186470e8
[INFO] running `Command { std: "docker" "start" "-a" "d9839853d8cde220d95b72b8d907fc687b835d51653a08c2482a1ac4186470e8", 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 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]     Checking parallel-letter-frequency v0.0.0 (/opt/rustwide/workdir/parallel-letter-frequency)
[INFO] [stderr]     Checking forth v1.7.0 (/opt/rustwide/workdir/forth)
[INFO] [stderr]     Checking sum-of-multiples v1.5.0 (/opt/rustwide/workdir/sum-of-multiples)
[INFO] [stderr]     Checking space-age v1.2.0 (/opt/rustwide/workdir/space-age)
[INFO] [stderr]     Checking raindrops v1.1.0 (/opt/rustwide/workdir/raindrops)
[INFO] [stderr]     Checking nth_prime v2.1.0 (/opt/rustwide/workdir/nth-prime)
[INFO] [stderr]     Checking health_statistics v0.1.0 (/opt/rustwide/workdir/health-statistics)
[INFO] [stderr]     Checking poker v1.1.0 (/opt/rustwide/workdir/poker)
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking time v0.3.17
[INFO] [stderr]     Checking minesweeper v1.1.0 (/opt/rustwide/workdir/minesweeper)
[INFO] [stderr]     Checking macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]     Checking magazine_cutout v0.1.0 (/opt/rustwide/workdir/magazine-cutout)
[INFO] [stderr]     Checking semi_structured_logs v0.1.0 (/opt/rustwide/workdir/semi-structured-logs)
[INFO] [stderr]     Checking short_fibonacci v0.1.0 (/opt/rustwide/workdir/short-fibonacci)
[INFO] [stderr]     Checking low_power_embedded_game v0.1.0 (/opt/rustwide/workdir/low-power-embedded-game)
[INFO] [stderr]     Checking prime_factors v1.1.0 (/opt/rustwide/workdir/prime-factors)
[INFO] [stderr]     Checking anagram v0.0.0 (/opt/rustwide/workdir/anagram)
[INFO] [stderr]     Checking clock v2.4.0 (/opt/rustwide/workdir/clock)
[INFO] [stderr]     Checking leap v1.6.0 (/opt/rustwide/workdir/leap)
[INFO] [stderr]     Checking sublist v0.0.0 (/opt/rustwide/workdir/sublist)
[INFO] [stderr]     Checking armstrong_numbers v1.1.0 (/opt/rustwide/workdir/armstrong-numbers)
[INFO] [stderr]     Checking difference-of-squares v1.2.0 (/opt/rustwide/workdir/difference-of-squares)
[INFO] [stderr]     Checking bob v1.6.0 (/opt/rustwide/workdir/bob)
[INFO] [stderr]     Checking luhn v1.6.1 (/opt/rustwide/workdir/luhn)
[INFO] [stderr]     Checking reverse_string v1.2.0 (/opt/rustwide/workdir/reverse-string)
[INFO] [stderr]     Checking proverb v1.1.0 (/opt/rustwide/workdir/proverb)
[INFO] [stderr]     Checking role_playing_game v0.1.0 (/opt/rustwide/workdir/role-playing-game)
[INFO] [stderr]     Checking assembly-line v0.1.0 (/opt/rustwide/workdir/assembly-line)
[INFO] [stderr]     Checking grains v1.2.0 (/opt/rustwide/workdir/grains)
[INFO] [stderr]     Checking rpn_calculator v0.1.0 (/opt/rustwide/workdir/rpn-calculator)
[INFO] [stderr]     Checking beer-song v0.0.0 (/opt/rustwide/workdir/beer-song)
[INFO] [stderr]     Checking gigasecond v2.0.0 (/opt/rustwide/workdir/gigasecond)
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d9839853d8cde220d95b72b8d907fc687b835d51653a08c2482a1ac4186470e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9839853d8cde220d95b72b8d907fc687b835d51653a08c2482a1ac4186470e8", kill_on_drop: false }`
[INFO] [stdout] d9839853d8cde220d95b72b8d907fc687b835d51653a08c2482a1ac4186470e8