[INFO] cloning repository https://github.com/lizhiquan/regex-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lizhiquan/regex-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flizhiquan%2Fregex-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flizhiquan%2Fregex-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4dc8739ad2376dab19850c7daedf8800ce362a2
[INFO] building lizhiquan/regex-rs 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%2Flizhiquan%2Fregex-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lizhiquan/regex-rs 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/lizhiquan/regex-rs
[INFO] finished tweaking git repo https://github.com/lizhiquan/regex-rs
[INFO] tweaked toml for git repo https://github.com/lizhiquan/regex-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lizhiquan/regex-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ab7a7c90fd8388ab908ef46f98468dda183ee3629d51984a964eaddddd970611
[INFO] running `Command { std: "docker" "start" "-a" "ab7a7c90fd8388ab908ef46f98468dda183ee3629d51984a964eaddddd970611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab7a7c90fd8388ab908ef46f98468dda183ee3629d51984a964eaddddd970611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7a7c90fd8388ab908ef46f98468dda183ee3629d51984a964eaddddd970611", kill_on_drop: false }`
[INFO] [stdout] ab7a7c90fd8388ab908ef46f98468dda183ee3629d51984a964eaddddd970611
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b9004a455b5dbae4383be57bcc4e8d235554a439813b177655ea08a0f2aff1ef
[INFO] running `Command { std: "docker" "start" "-a" "b9004a455b5dbae4383be57bcc4e8d235554a439813b177655ea08a0f2aff1ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling regex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Exact` and `Range` are never constructed
[INFO] [stdout]   --> src/parser.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub(crate) enum Quantifier {
[INFO] [stdout]    |                 ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 32 |     Exact(usize),                // {n}
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     Range(usize, Option<usize>), // {n,m}
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Quantifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "b9004a455b5dbae4383be57bcc4e8d235554a439813b177655ea08a0f2aff1ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9004a455b5dbae4383be57bcc4e8d235554a439813b177655ea08a0f2aff1ef", kill_on_drop: false }`
[INFO] [stdout] b9004a455b5dbae4383be57bcc4e8d235554a439813b177655ea08a0f2aff1ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 084ec4bb832d2722a02b1959af280d410c6ba18610224555d5915db9e9566efd
[INFO] running `Command { std: "docker" "start" "-a" "084ec4bb832d2722a02b1959af280d410c6ba18610224555d5915db9e9566efd", kill_on_drop: false }`
[INFO] [stdout] warning: variants `Exact` and `Range` are never constructed
[INFO] [stdout]   --> src/parser.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub(crate) enum Quantifier {
[INFO] [stdout]    |                 ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 32 |     Exact(usize),                // {n}
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     Range(usize, Option<usize>), // {n,m}
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Quantifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Exact` and `Range` are never constructed
[INFO] [stdout]   --> src/parser.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub(crate) enum Quantifier {
[INFO] [stdout]    |                 ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 32 |     Exact(usize),                // {n}
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     Range(usize, Option<usize>), // {n,m}
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Quantifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "084ec4bb832d2722a02b1959af280d410c6ba18610224555d5915db9e9566efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084ec4bb832d2722a02b1959af280d410c6ba18610224555d5915db9e9566efd", kill_on_drop: false }`
[INFO] [stdout] 084ec4bb832d2722a02b1959af280d410c6ba18610224555d5915db9e9566efd