[INFO] cloning repository https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirillgrachoff%2Ffly-io-dist-sys-challenge-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirillgrachoff%2Ffly-io-dist-sys-challenge-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee8a5a579b7f700bea671cefdade4fb12e7d7b2b
[INFO] checking kirillgrachoff/fly-io-dist-sys-challenge-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirillgrachoff%2Ffly-io-dist-sys-challenge-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/kirillgrachoff/fly-io-dist-sys-challenge-rust 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/kirillgrachoff/fly-io-dist-sys-challenge-rust
[INFO] finished tweaking git repo https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-rust
[INFO] tweaked toml for git repo https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-context v0.1.3
[INFO] [stderr]   Downloaded maelstrom-node v0.1.6
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e337f9dcfd49137b2ea00b9822287040ae4861a64963b5986d6297e669dbcbf
[INFO] running `Command { std: "docker" "start" "-a" "8e337f9dcfd49137b2ea00b9822287040ae4861a64963b5986d6297e669dbcbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e337f9dcfd49137b2ea00b9822287040ae4861a64963b5986d6297e669dbcbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e337f9dcfd49137b2ea00b9822287040ae4861a64963b5986d6297e669dbcbf", kill_on_drop: false }`
[INFO] [stdout] 8e337f9dcfd49137b2ea00b9822287040ae4861a64963b5986d6297e669dbcbf
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4301046629cdc7d473040d6f223ee708887c5c774c8ae0dfb162446c367b43a4
[INFO] running `Command { std: "docker" "start" "-a" "4301046629cdc7d473040d6f223ee708887c5c774c8ae0dfb162446c367b43a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking smallvec v1.12.0
[INFO] [stderr]    Compiling rustix v0.38.30
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking simple-error v0.3.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking env_logger v0.10.1
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-context v0.1.3
[INFO] [stderr]     Checking maelstrom-node v0.1.6
[INFO] [stderr]     Checking fly-io-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.40s
[INFO] running `Command { std: "docker" "inspect" "4301046629cdc7d473040d6f223ee708887c5c774c8ae0dfb162446c367b43a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4301046629cdc7d473040d6f223ee708887c5c774c8ae0dfb162446c367b43a4", kill_on_drop: false }`
[INFO] [stdout] 4301046629cdc7d473040d6f223ee708887c5c774c8ae0dfb162446c367b43a4
[INFO] checking kirillgrachoff/fly-io-dist-sys-challenge-rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirillgrachoff%2Ffly-io-dist-sys-challenge-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/kirillgrachoff/fly-io-dist-sys-challenge-rust 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/kirillgrachoff/fly-io-dist-sys-challenge-rust
[INFO] finished tweaking git repo https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-rust
[INFO] tweaked toml for git repo https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kirillgrachoff/fly-io-dist-sys-challenge-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be58d4c398714df1ceb92ddbb78d79fdfad6e95db0d29e30de60b523ebb0090c
[INFO] running `Command { std: "docker" "start" "-a" "be58d4c398714df1ceb92ddbb78d79fdfad6e95db0d29e30de60b523ebb0090c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be58d4c398714df1ceb92ddbb78d79fdfad6e95db0d29e30de60b523ebb0090c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be58d4c398714df1ceb92ddbb78d79fdfad6e95db0d29e30de60b523ebb0090c", kill_on_drop: false }`
[INFO] [stdout] be58d4c398714df1ceb92ddbb78d79fdfad6e95db0d29e30de60b523ebb0090c
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4384550baa87c5be9f1637914c2b50abb1d63c0d4b38b496ad0a9d00bf7c2841
[INFO] running `Command { std: "docker" "start" "-a" "4384550baa87c5be9f1637914c2b50abb1d63c0d4b38b496ad0a9d00bf7c2841", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking smallvec v1.12.0
[INFO] [stderr]    Compiling rustix v0.38.30
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking simple-error v0.3.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking env_logger v0.10.1
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-context v0.1.3
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking maelstrom-node v0.1.6
[INFO] [stderr]     Checking fly-io-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.27s
[INFO] running `Command { std: "docker" "inspect" "4384550baa87c5be9f1637914c2b50abb1d63c0d4b38b496ad0a9d00bf7c2841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4384550baa87c5be9f1637914c2b50abb1d63c0d4b38b496ad0a9d00bf7c2841", kill_on_drop: false }`
[INFO] [stdout] 4384550baa87c5be9f1637914c2b50abb1d63c0d4b38b496ad0a9d00bf7c2841