[INFO] cloning repository https://github.com/misty1999/rustlings_solution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/misty1999/rustlings_solution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmisty1999%2Frustlings_solution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmisty1999%2Frustlings_solution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c306792449ae3d9870f9991622590f757872c4e9
[INFO] checking misty1999/rustlings_solution against try#7424ce9ff9baac3e9d9f5dd3c85828cddea0134d for pr-136776-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmisty1999%2Frustlings_solution" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/misty1999/rustlings_solution
[INFO] finished tweaking git repo https://github.com/misty1999/rustlings_solution
[INFO] tweaked toml for git repo https://github.com/misty1999/rustlings_solution written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/misty1999/rustlings_solution on toolchain 7424ce9ff9baac3e9d9f5dd3c85828cddea0134d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/misty1999/rustlings_solution 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" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking misty1999/rustlings_solution against try#7424ce9ff9baac3e9d9f5dd3c85828cddea0134d for pr-136776-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmisty1999%2Frustlings_solution" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/misty1999/rustlings_solution
[INFO] finished tweaking git repo https://github.com/misty1999/rustlings_solution
[INFO] tweaked toml for git repo https://github.com/misty1999/rustlings_solution written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/misty1999/rustlings_solution on toolchain 7424ce9ff9baac3e9d9f5dd3c85828cddea0134d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/misty1999/rustlings_solution 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" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e9187af34a42617c12a1bbd07e683c7a2db491a2f8d49558f0c642282e706a1
[INFO] running `Command { std: "docker" "start" "-a" "3e9187af34a42617c12a1bbd07e683c7a2db491a2f8d49558f0c642282e706a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e9187af34a42617c12a1bbd07e683c7a2db491a2f8d49558f0c642282e706a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e9187af34a42617c12a1bbd07e683c7a2db491a2f8d49558f0c642282e706a1", kill_on_drop: false }`
[INFO] [stdout] 3e9187af34a42617c12a1bbd07e683c7a2db491a2f8d49558f0c642282e706a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9c59aa33fbfd02bb75ff098d3c15546174618fa6622a59df3ed29408c2b0eff
[INFO] running `Command { std: "docker" "start" "-a" "d9c59aa33fbfd02bb75ff098d3c15546174618fa6622a59df3ed29408c2b0eff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking anstyle v1.0.3
[INFO] [stderr]    Compiling portable-atomic v1.4.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]     Checking winnow v0.5.15
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking home v0.5.4
[INFO] [stderr]     Checking anstream v0.5.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
[INFO] [stderr]     Checking clap_builder v4.4.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.53/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]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking indexmap v2.0.0
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d9c59aa33fbfd02bb75ff098d3c15546174618fa6622a59df3ed29408c2b0eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c59aa33fbfd02bb75ff098d3c15546174618fa6622a59df3ed29408c2b0eff", kill_on_drop: false }`
[INFO] [stdout] d9c59aa33fbfd02bb75ff098d3c15546174618fa6622a59df3ed29408c2b0eff