[INFO] cloning repository https://github.com/NathanInnes/rust-name-guesser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NathanInnes/rust-name-guesser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathanInnes%2Frust-name-guesser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathanInnes%2Frust-name-guesser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28c135b06ec10a7204bce8c0e88940daa0198c5d
[INFO] building NathanInnes/rust-name-guesser 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%2FNathanInnes%2Frust-name-guesser" "/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/NathanInnes/rust-name-guesser 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/NathanInnes/rust-name-guesser
[INFO] finished tweaking git repo https://github.com/NathanInnes/rust-name-guesser
[INFO] tweaked toml for git repo https://github.com/NathanInnes/rust-name-guesser written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NathanInnes/rust-name-guesser 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-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] be18a16595327c16327a4d7a4fde5edd5b1981d0b37d9d3b30f03559d8aa4dd4
[INFO] running `Command { std: "docker" "start" "-a" "be18a16595327c16327a4d7a4fde5edd5b1981d0b37d9d3b30f03559d8aa4dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be18a16595327c16327a4d7a4fde5edd5b1981d0b37d9d3b30f03559d8aa4dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be18a16595327c16327a4d7a4fde5edd5b1981d0b37d9d3b30f03559d8aa4dd4", kill_on_drop: false }`
[INFO] [stdout] be18a16595327c16327a4d7a4fde5edd5b1981d0b37d9d3b30f03559d8aa4dd4
[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] 22c231a00a27aa07a778c6d1e1e21e752100e055e6d06c40a29b61a7b58af3a4
[INFO] running `Command { std: "docker" "start" "-a" "22c231a00a27aa07a778c6d1e1e21e752100e055e6d06c40a29b61a7b58af3a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling name_guesser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]  --> src/main.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let name_value: &str = names[(rand::thread_rng().gen_range(0..names.len()))];
[INFO] [stdout]   |                                  ^                                            ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 8 -     let name_value: &str = names[(rand::thread_rng().gen_range(0..names.len()))];
[INFO] [stdout] 8 +     let name_value: &str = names[rand::thread_rng().gen_range(0..names.len())];
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "22c231a00a27aa07a778c6d1e1e21e752100e055e6d06c40a29b61a7b58af3a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22c231a00a27aa07a778c6d1e1e21e752100e055e6d06c40a29b61a7b58af3a4", kill_on_drop: false }`
[INFO] [stdout] 22c231a00a27aa07a778c6d1e1e21e752100e055e6d06c40a29b61a7b58af3a4
[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] a390b63b69dd37ab55c31e2a32799168cb7531e0d75489c5b445f7d85dbd9a7c
[INFO] running `Command { std: "docker" "start" "-a" "a390b63b69dd37ab55c31e2a32799168cb7531e0d75489c5b445f7d85dbd9a7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling name_guesser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]  --> src/main.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let name_value: &str = names[(rand::thread_rng().gen_range(0..names.len()))];
[INFO] [stdout]   |                                  ^                                            ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 8 -     let name_value: &str = names[(rand::thread_rng().gen_range(0..names.len()))];
[INFO] [stdout] 8 +     let name_value: &str = names[rand::thread_rng().gen_range(0..names.len())];
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "a390b63b69dd37ab55c31e2a32799168cb7531e0d75489c5b445f7d85dbd9a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a390b63b69dd37ab55c31e2a32799168cb7531e0d75489c5b445f7d85dbd9a7c", kill_on_drop: false }`
[INFO] [stdout] a390b63b69dd37ab55c31e2a32799168cb7531e0d75489c5b445f7d85dbd9a7c