[INFO] cloning repository https://github.com/vladimirdotk/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/vladimirdotk/exercism-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladimirdotk%2Fexercism-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladimirdotk%2Fexercism-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36369f9609ca45346c98df182f25604bb8820455
[INFO] checking vladimirdotk/exercism-rust against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladimirdotk%2Fexercism-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vladimirdotk/exercism-rust on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vladimirdotk/exercism-rust
[INFO] finished tweaking git repo https://github.com/vladimirdotk/exercism-rust
[INFO] tweaked toml for git repo https://github.com/vladimirdotk/exercism-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vladimirdotk/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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded time v0.3.35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4944898a03d62e33417e35d61a075a702984d70663635e55ae096a5df4772c93
[INFO] running `Command { std: "docker" "start" "-a" "4944898a03d62e33417e35d61a075a702984d70663635e55ae096a5df4772c93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4944898a03d62e33417e35d61a075a702984d70663635e55ae096a5df4772c93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4944898a03d62e33417e35d61a075a702984d70663635e55ae096a5df4772c93", kill_on_drop: false }`
[INFO] [stdout] 4944898a03d62e33417e35d61a075a702984d70663635e55ae096a5df4772c93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b559c1eccee9519f008ad9715f27be2a4ef0ee4408f9ece78a30b084c90c9d8a
[INFO] running `Command { std: "docker" "start" "-a" "b559c1eccee9519f008ad9715f27be2a4ef0ee4408f9ece78a30b084c90c9d8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking time v0.3.35
[INFO] [stderr]     Checking space-age v1.2.0 (/opt/rustwide/workdir/space-age)
[INFO] [stderr]     Checking minesweeper v1.1.0 (/opt/rustwide/workdir/minesweeper)
[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 reverse_string v1.2.0 (/opt/rustwide/workdir/reverse-string)
[INFO] [stderr]     Checking hello-world v1.1.0 (/opt/rustwide/workdir/hello-world)
[INFO] [stderr]     Checking luhn v1.6.1 (/opt/rustwide/workdir/luhn)
[INFO] [stderr]     Checking sublist v0.0.0 (/opt/rustwide/workdir/sublist)
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking gigasecond v2.0.0 (/opt/rustwide/workdir/gigasecond)
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking parallel-letter-frequency v0.0.0 (/opt/rustwide/workdir/parallel-letter-frequency)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.45s
[INFO] running `Command { std: "docker" "inspect" "b559c1eccee9519f008ad9715f27be2a4ef0ee4408f9ece78a30b084c90c9d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b559c1eccee9519f008ad9715f27be2a4ef0ee4408f9ece78a30b084c90c9d8a", kill_on_drop: false }`
[INFO] [stdout] b559c1eccee9519f008ad9715f27be2a4ef0ee4408f9ece78a30b084c90c9d8a
[INFO] checking vladimirdotk/exercism-rust against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladimirdotk%2Fexercism-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vladimirdotk/exercism-rust on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vladimirdotk/exercism-rust
[INFO] finished tweaking git repo https://github.com/vladimirdotk/exercism-rust
[INFO] tweaked toml for git repo https://github.com/vladimirdotk/exercism-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vladimirdotk/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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 881ccc9c6c21ceb820f19b2f70176bfcaa9c365de261549a9679a4fae1e21be9
[INFO] running `Command { std: "docker" "start" "-a" "881ccc9c6c21ceb820f19b2f70176bfcaa9c365de261549a9679a4fae1e21be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "881ccc9c6c21ceb820f19b2f70176bfcaa9c365de261549a9679a4fae1e21be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "881ccc9c6c21ceb820f19b2f70176bfcaa9c365de261549a9679a4fae1e21be9", kill_on_drop: false }`
[INFO] [stdout] 881ccc9c6c21ceb820f19b2f70176bfcaa9c365de261549a9679a4fae1e21be9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ecef48bfac5c0a31aea8db4b4f37b2b2501f559ccbb78043e660fe7b7ba70a7f
[INFO] running `Command { std: "docker" "start" "-a" "ecef48bfac5c0a31aea8db4b4f37b2b2501f559ccbb78043e660fe7b7ba70a7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking time v0.3.35
[INFO] [stderr]     Checking space-age v1.2.0 (/opt/rustwide/workdir/space-age)
[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 sublist v0.0.0 (/opt/rustwide/workdir/sublist)
[INFO] [stderr]     Checking minesweeper v1.1.0 (/opt/rustwide/workdir/minesweeper)
[INFO] [stderr]     Checking reverse_string v1.2.0 (/opt/rustwide/workdir/reverse-string)
[INFO] [stderr]     Checking luhn v1.6.1 (/opt/rustwide/workdir/luhn)
[INFO] [stderr]     Checking hello-world v1.1.0 (/opt/rustwide/workdir/hello-world)
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking gigasecond v2.0.0 (/opt/rustwide/workdir/gigasecond)
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking parallel-letter-frequency v0.0.0 (/opt/rustwide/workdir/parallel-letter-frequency)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.92s
[INFO] running `Command { std: "docker" "inspect" "ecef48bfac5c0a31aea8db4b4f37b2b2501f559ccbb78043e660fe7b7ba70a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecef48bfac5c0a31aea8db4b4f37b2b2501f559ccbb78043e660fe7b7ba70a7f", kill_on_drop: false }`
[INFO] [stdout] ecef48bfac5c0a31aea8db4b4f37b2b2501f559ccbb78043e660fe7b7ba70a7f