[INFO] cloning repository https://github.com/rctcwyvrn/letter_boxed_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rctcwyvrn/letter_boxed_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frctcwyvrn%2Fletter_boxed_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frctcwyvrn%2Fletter_boxed_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e7347ea294d30eda8f55732ae206c04c15666a4
[INFO] building rctcwyvrn/letter_boxed_solver against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frctcwyvrn%2Fletter_boxed_solver" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rctcwyvrn/letter_boxed_solver on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rctcwyvrn/letter_boxed_solver
[INFO] finished tweaking git repo https://github.com/rctcwyvrn/letter_boxed_solver
[INFO] tweaked toml for git repo https://github.com/rctcwyvrn/letter_boxed_solver written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rctcwyvrn/letter_boxed_solver 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fid-rs v0.1.1
[INFO] [stderr]   Downloaded louds-rs v0.4.0
[INFO] [stderr]   Downloaded trie-rs v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44aa757012facb8902aeed42f1dc4d0f1f7ff563d5d0f43bb14f263d00186740
[INFO] running `Command { std: "docker" "start" "-a" "44aa757012facb8902aeed42f1dc4d0f1f7ff563d5d0f43bb14f263d00186740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44aa757012facb8902aeed42f1dc4d0f1f7ff563d5d0f43bb14f263d00186740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44aa757012facb8902aeed42f1dc4d0f1f7ff563d5d0f43bb14f263d00186740", kill_on_drop: false }`
[INFO] [stdout] 44aa757012facb8902aeed42f1dc4d0f1f7ff563d5d0f43bb14f263d00186740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f332fed5fa65cd066fbf892bae1c7cb2d27b566d561dc3da68e8dcb9c38ced2
[INFO] running `Command { std: "docker" "start" "-a" "6f332fed5fa65cd066fbf892bae1c7cb2d27b566d561dc3da68e8dcb9c38ced2", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling rayon v1.6.0
[INFO] [stderr]    Compiling fid-rs v0.1.1
[INFO] [stderr]    Compiling louds-rs v0.4.0
[INFO] [stderr]    Compiling trie-rs v0.1.1
[INFO] [stderr]    Compiling letter_boxed_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "6f332fed5fa65cd066fbf892bae1c7cb2d27b566d561dc3da68e8dcb9c38ced2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f332fed5fa65cd066fbf892bae1c7cb2d27b566d561dc3da68e8dcb9c38ced2", kill_on_drop: false }`
[INFO] [stdout] 6f332fed5fa65cd066fbf892bae1c7cb2d27b566d561dc3da68e8dcb9c38ced2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bea707ff3fb29c3a8702d97f76b6b16aa9d108607427dbd18a4b945a4d1e5eb
[INFO] running `Command { std: "docker" "start" "-a" "8bea707ff3fb29c3a8702d97f76b6b16aa9d108607427dbd18a4b945a4d1e5eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling letter_boxed_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "8bea707ff3fb29c3a8702d97f76b6b16aa9d108607427dbd18a4b945a4d1e5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bea707ff3fb29c3a8702d97f76b6b16aa9d108607427dbd18a4b945a4d1e5eb", kill_on_drop: false }`
[INFO] [stdout] 8bea707ff3fb29c3a8702d97f76b6b16aa9d108607427dbd18a4b945a4d1e5eb