[INFO] cloning repository https://github.com/tjf801/hrm-optimizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tjf801/hrm-optimizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjf801%2Fhrm-optimizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjf801%2Fhrm-optimizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c3358983ee227222b755f0746b5e20ea125920b
[INFO] building tjf801/hrm-optimizer 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%2Ftjf801%2Fhrm-optimizer" "/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/tjf801/hrm-optimizer 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/tjf801/hrm-optimizer
[INFO] finished tweaking git repo https://github.com/tjf801/hrm-optimizer
[INFO] tweaked toml for git repo https://github.com/tjf801/hrm-optimizer written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tjf801/hrm-optimizer 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]     Blocking waiting for file lock on package cache
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2220d4ba37ae8398ff450b5d09db214548e7acd50238e7762a95e24492fcb36a
[INFO] running `Command { std: "docker" "start" "-a" "2220d4ba37ae8398ff450b5d09db214548e7acd50238e7762a95e24492fcb36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2220d4ba37ae8398ff450b5d09db214548e7acd50238e7762a95e24492fcb36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2220d4ba37ae8398ff450b5d09db214548e7acd50238e7762a95e24492fcb36a", kill_on_drop: false }`
[INFO] [stdout] 2220d4ba37ae8398ff450b5d09db214548e7acd50238e7762a95e24492fcb36a
[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 -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] 7866c60de6806a6204cc4b6fdc17c6c876e1af08bf8889fd7dec0f38b6e6f9d9
[INFO] running `Command { std: "docker" "start" "-a" "7866c60de6806a6204cc4b6fdc17c6c876e1af08bf8889fd7dec0f38b6e6f9d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling hrm-optimizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `previous_flag`
[INFO] [stdout]    --> src/optimize/control_flow_graph.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |             let previous_flag = JumpFlag::Never;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_flag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "7866c60de6806a6204cc4b6fdc17c6c876e1af08bf8889fd7dec0f38b6e6f9d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7866c60de6806a6204cc4b6fdc17c6c876e1af08bf8889fd7dec0f38b6e6f9d9", kill_on_drop: false }`
[INFO] [stdout] 7866c60de6806a6204cc4b6fdc17c6c876e1af08bf8889fd7dec0f38b6e6f9d9
[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 -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] 2ef7305c47e92d2ce9024aaedaab5540a78970b581e41e99c18b4112f5da115a
[INFO] running `Command { std: "docker" "start" "-a" "2ef7305c47e92d2ce9024aaedaab5540a78970b581e41e99c18b4112f5da115a", kill_on_drop: false }`
[INFO] [stderr]    Compiling hrm-optimizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `previous_flag`
[INFO] [stdout]    --> src/optimize/control_flow_graph.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |             let previous_flag = JumpFlag::Never;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_flag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "2ef7305c47e92d2ce9024aaedaab5540a78970b581e41e99c18b4112f5da115a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ef7305c47e92d2ce9024aaedaab5540a78970b581e41e99c18b4112f5da115a", kill_on_drop: false }`
[INFO] [stdout] 2ef7305c47e92d2ce9024aaedaab5540a78970b581e41e99c18b4112f5da115a