[INFO] cloning repository https://github.com/JamiroFerrara/unique-combinations-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JamiroFerrara/unique-combinations-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamiroFerrara%2Funique-combinations-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamiroFerrara%2Funique-combinations-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79157d63b72a0665a45cbd381ceb956842325231
[INFO] building JamiroFerrara/unique-combinations-rust 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%2FJamiroFerrara%2Funique-combinations-rust" "/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/JamiroFerrara/unique-combinations-rust 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/JamiroFerrara/unique-combinations-rust
[INFO] finished tweaking git repo https://github.com/JamiroFerrara/unique-combinations-rust
[INFO] tweaked toml for git repo https://github.com/JamiroFerrara/unique-combinations-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JamiroFerrara/unique-combinations-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smawk v0.3.1
[INFO] [stderr]   Downloaded ferris-says v0.2.1
[INFO] [stderr]   Downloaded textwrap v0.13.4
[INFO] [stderr]   Downloaded smallvec v0.4.5
[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] 13b1dca9d9cc4aa8119f8af6becf384f77ee7acd77c4a7054b3c9ddb99efb616
[INFO] running `Command { std: "docker" "start" "-a" "13b1dca9d9cc4aa8119f8af6becf384f77ee7acd77c4a7054b3c9ddb99efb616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13b1dca9d9cc4aa8119f8af6becf384f77ee7acd77c4a7054b3c9ddb99efb616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13b1dca9d9cc4aa8119f8af6becf384f77ee7acd77c4a7054b3c9ddb99efb616", kill_on_drop: false }`
[INFO] [stdout] 13b1dca9d9cc4aa8119f8af6becf384f77ee7acd77c4a7054b3c9ddb99efb616
[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] 69ca75bc82d0aafabf08101fe4c4980f5b0da9e53157e47cab54f5a73ffea94d
[INFO] running `Command { std: "docker" "start" "-a" "69ca75bc82d0aafabf08101fe4c4980f5b0da9e53157e47cab54f5a73ffea94d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling smawk v0.3.1
[INFO] [stderr]    Compiling smallvec v0.4.5
[INFO] [stderr]    Compiling either v1.7.0
[INFO] [stderr]    Compiling textwrap v0.13.4
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling ferris-says v0.2.1
[INFO] [stderr]    Compiling unique-combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "69ca75bc82d0aafabf08101fe4c4980f5b0da9e53157e47cab54f5a73ffea94d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69ca75bc82d0aafabf08101fe4c4980f5b0da9e53157e47cab54f5a73ffea94d", kill_on_drop: false }`
[INFO] [stdout] 69ca75bc82d0aafabf08101fe4c4980f5b0da9e53157e47cab54f5a73ffea94d
[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] f8ff6002e8c176eeafeca8cbece90b096a6fbc2f45ede359605f46e020471062
[INFO] running `Command { std: "docker" "start" "-a" "f8ff6002e8c176eeafeca8cbece90b096a6fbc2f45ede359605f46e020471062", kill_on_drop: false }`
[INFO] [stderr]    Compiling unique-combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "f8ff6002e8c176eeafeca8cbece90b096a6fbc2f45ede359605f46e020471062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8ff6002e8c176eeafeca8cbece90b096a6fbc2f45ede359605f46e020471062", kill_on_drop: false }`
[INFO] [stdout] f8ff6002e8c176eeafeca8cbece90b096a6fbc2f45ede359605f46e020471062