[INFO] cloning repository https://github.com/AuroransSolis/project-euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AuroransSolis/project-euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAuroransSolis%2Fproject-euler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAuroransSolis%2Fproject-euler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9365fcaaf9f60192748dd7f9ea30349b018137e5
[INFO] checking AuroransSolis/project-euler against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAuroransSolis%2Fproject-euler" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AuroransSolis/project-euler on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AuroransSolis/project-euler
[INFO] finished tweaking git repo https://github.com/AuroransSolis/project-euler
[INFO] tweaked toml for git repo https://github.com/AuroransSolis/project-euler written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 71 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding criterion v0.3.6 (latest: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (latest: v0.5.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bf421e5c56240331cd8726dc2292c90256e32bf6046f9f65e3f50647f1b305e
[INFO] running `Command { std: "docker" "start" "-a" "0bf421e5c56240331cd8726dc2292c90256e32bf6046f9f65e3f50647f1b305e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bf421e5c56240331cd8726dc2292c90256e32bf6046f9f65e3f50647f1b305e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bf421e5c56240331cd8726dc2292c90256e32bf6046f9f65e3f50647f1b305e", kill_on_drop: false }`
[INFO] [stdout] 0bf421e5c56240331cd8726dc2292c90256e32bf6046f9f65e3f50647f1b305e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf442d865c58fad97c31cffd6c2e94d03b7b2668eb3ab35c0a4d6f5c31333fbb
[INFO] running `Command { std: "docker" "start" "-a" "cf442d865c58fad97c31cffd6c2e94d03b7b2668eb3ab35c0a4d6f5c31333fbb", kill_on_drop: false }`
[INFO] [stderr]     Checking problem-2 v0.1.0 (/opt/rustwide/workdir/problem-2)
[INFO] [stderr]     Checking problem-4 v0.1.0 (/opt/rustwide/workdir/problem-4)
[INFO] [stderr]     Checking problem-5 v0.1.0 (/opt/rustwide/workdir/problem-5)
[INFO] [stderr]     Checking problem-6 v0.1.0 (/opt/rustwide/workdir/problem-6)
[INFO] [stderr]     Checking problem-3 v0.1.0 (/opt/rustwide/workdir/problem-3)
[INFO] [stderr]     Checking problem-7 v0.1.0 (/opt/rustwide/workdir/problem-7)
[INFO] [stderr]     Checking problem-11 v0.1.0 (/opt/rustwide/workdir/problem-11)
[INFO] [stderr]     Checking problem-1 v0.1.0 (/opt/rustwide/workdir/problem-1)
[INFO] [stderr]     Checking problem-8 v0.1.0 (/opt/rustwide/workdir/problem-8)
[INFO] [stderr]     Checking problem-10 v0.1.0 (/opt/rustwide/workdir/problem-10)
[INFO] [stderr]     Checking problem-9 v0.1.0 (/opt/rustwide/workdir/problem-9)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "cf442d865c58fad97c31cffd6c2e94d03b7b2668eb3ab35c0a4d6f5c31333fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf442d865c58fad97c31cffd6c2e94d03b7b2668eb3ab35c0a4d6f5c31333fbb", kill_on_drop: false }`
[INFO] [stdout] cf442d865c58fad97c31cffd6c2e94d03b7b2668eb3ab35c0a4d6f5c31333fbb
[INFO] checking AuroransSolis/project-euler against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAuroransSolis%2Fproject-euler" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AuroransSolis/project-euler on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AuroransSolis/project-euler
[INFO] finished tweaking git repo https://github.com/AuroransSolis/project-euler
[INFO] tweaked toml for git repo https://github.com/AuroransSolis/project-euler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 71 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding criterion v0.3.6 (latest: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (latest: v0.5.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a081372d3b15f439cdef7f205bbdc23759ae575b0e488afa97bf3823a83db00c
[INFO] running `Command { std: "docker" "start" "-a" "a081372d3b15f439cdef7f205bbdc23759ae575b0e488afa97bf3823a83db00c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a081372d3b15f439cdef7f205bbdc23759ae575b0e488afa97bf3823a83db00c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a081372d3b15f439cdef7f205bbdc23759ae575b0e488afa97bf3823a83db00c", kill_on_drop: false }`
[INFO] [stdout] a081372d3b15f439cdef7f205bbdc23759ae575b0e488afa97bf3823a83db00c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da68cd9d574cf31c8f3c312d60a95e319499d485b094d5fc0102497cb7cc7a3f
[INFO] running `Command { std: "docker" "start" "-a" "da68cd9d574cf31c8f3c312d60a95e319499d485b094d5fc0102497cb7cc7a3f", kill_on_drop: false }`
[INFO] [stderr]     Checking problem-8 v0.1.0 (/opt/rustwide/workdir/problem-8)
[INFO] [stderr]     Checking problem-1 v0.1.0 (/opt/rustwide/workdir/problem-1)
[INFO] [stderr]     Checking problem-11 v0.1.0 (/opt/rustwide/workdir/problem-11)
[INFO] [stderr]     Checking problem-3 v0.1.0 (/opt/rustwide/workdir/problem-3)
[INFO] [stderr]     Checking problem-5 v0.1.0 (/opt/rustwide/workdir/problem-5)
[INFO] [stderr]     Checking problem-6 v0.1.0 (/opt/rustwide/workdir/problem-6)
[INFO] [stderr]     Checking problem-9 v0.1.0 (/opt/rustwide/workdir/problem-9)
[INFO] [stderr]     Checking problem-7 v0.1.0 (/opt/rustwide/workdir/problem-7)
[INFO] [stderr]     Checking problem-10 v0.1.0 (/opt/rustwide/workdir/problem-10)
[INFO] [stderr]     Checking problem-2 v0.1.0 (/opt/rustwide/workdir/problem-2)
[INFO] [stderr]     Checking problem-4 v0.1.0 (/opt/rustwide/workdir/problem-4)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "da68cd9d574cf31c8f3c312d60a95e319499d485b094d5fc0102497cb7cc7a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da68cd9d574cf31c8f3c312d60a95e319499d485b094d5fc0102497cb7cc7a3f", kill_on_drop: false }`
[INFO] [stdout] da68cd9d574cf31c8f3c312d60a95e319499d485b094d5fc0102497cb7cc7a3f