[INFO] cloning repository https://github.com/Beardev118/exercism-rust-solution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Beardev118/exercism-rust-solution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardev118%2Fexercism-rust-solution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardev118%2Fexercism-rust-solution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 61f8a94234d31bb59e997327f6bb7e558a5bb8aa
[INFO] documenting Beardev118/exercism-rust-solution against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardev118%2Fexercism-rust-solution" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Beardev118/exercism-rust-solution on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Beardev118/exercism-rust-solution
[INFO] finished tweaking git repo https://github.com/Beardev118/exercism-rust-solution
[INFO] tweaked toml for git repo https://github.com/Beardev118/exercism-rust-solution written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Beardev118/exercism-rust-solution already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 457d4126c7bb5d899507ec9f674f7c653890355c5bfa47c0341c3f34fb80cdab
[INFO] running `Command { std: "docker" "start" "-a" "457d4126c7bb5d899507ec9f674f7c653890355c5bfa47c0341c3f34fb80cdab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "457d4126c7bb5d899507ec9f674f7c653890355c5bfa47c0341c3f34fb80cdab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "457d4126c7bb5d899507ec9f674f7c653890355c5bfa47c0341c3f34fb80cdab", kill_on_drop: false }`
[INFO] [stdout] 457d4126c7bb5d899507ec9f674f7c653890355c5bfa47c0341c3f34fb80cdab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31e8f53286408f2146e762c6d8770a9304ed4c500fc3901d042128cbf313c725
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31e8f53286408f2146e762c6d8770a9304ed4c500fc3901d042128cbf313c725", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling enum-iterator-derive v0.7.0
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]     Checking enum-iterator v0.7.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling int-enum-impl v0.4.0
[INFO] [stderr]     Checking int-enum v0.4.0
[INFO] [stderr]  Documenting hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.05s
[INFO] running `Command { std: "docker" "inspect" "31e8f53286408f2146e762c6d8770a9304ed4c500fc3901d042128cbf313c725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e8f53286408f2146e762c6d8770a9304ed4c500fc3901d042128cbf313c725", kill_on_drop: false }`
[INFO] [stdout] 31e8f53286408f2146e762c6d8770a9304ed4c500fc3901d042128cbf313c725
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c202573f31687171ef5f85ce819167e04fc8965c7c58f4724eafc055a185cda1
[INFO] running `Command { std: "docker" "start" "-a" "c202573f31687171ef5f85ce819167e04fc8965c7c58f4724eafc055a185cda1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling enum-iterator-derive v0.7.0
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]     Checking enum-iterator v0.7.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling int-enum-impl v0.4.0
[INFO] [stderr]     Checking int-enum v0.4.0
[INFO] [stderr]  Documenting hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.82s
[INFO] running `Command { std: "docker" "inspect" "c202573f31687171ef5f85ce819167e04fc8965c7c58f4724eafc055a185cda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c202573f31687171ef5f85ce819167e04fc8965c7c58f4724eafc055a185cda1", kill_on_drop: false }`
[INFO] [stdout] c202573f31687171ef5f85ce819167e04fc8965c7c58f4724eafc055a185cda1