[INFO] fetching crate plushuang-metrics 0.2.0...
[INFO] building plushuang-metrics-0.2.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate plushuang-metrics 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate plushuang-metrics 0.2.0 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 crates.io crate plushuang-metrics 0.2.0
[INFO] finished tweaking crates.io crate plushuang-metrics 0.2.0
[INFO] tweaked toml for crates.io crate plushuang-metrics 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate plushuang-metrics 0.2.0 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 36ee4349a7499a3ddb18e942af80c38e66694454cec10eec1839c6ba228e5032
[INFO] running `Command { std: "docker" "start" "-a" "36ee4349a7499a3ddb18e942af80c38e66694454cec10eec1839c6ba228e5032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36ee4349a7499a3ddb18e942af80c38e66694454cec10eec1839c6ba228e5032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ee4349a7499a3ddb18e942af80c38e66694454cec10eec1839c6ba228e5032", kill_on_drop: false }`
[INFO] [stdout] 36ee4349a7499a3ddb18e942af80c38e66694454cec10eec1839c6ba228e5032
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b1e7889f6eaf68a6e34d3f050727cdbfc7014856c5fe4d82244437ead2fb53a9
[INFO] running `Command { std: "docker" "start" "-a" "b1e7889f6eaf68a6e34d3f050727cdbfc7014856c5fe4d82244437ead2fb53a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling libc v0.2.168
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling sysinfo v0.32.1
[INFO] [stderr]    Compiling plushuang-metrics v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sys`
[INFO] [stdout]    --> src/lib.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn total_space(sys: &mut System) -> Result<u64, String> {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_sys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sys`
[INFO] [stdout]    --> src/lib.rs:123:24
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn available_space(sys: &mut System) -> Result<u64, String> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_sys`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.25s
[INFO] running `Command { std: "docker" "inspect" "b1e7889f6eaf68a6e34d3f050727cdbfc7014856c5fe4d82244437ead2fb53a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1e7889f6eaf68a6e34d3f050727cdbfc7014856c5fe4d82244437ead2fb53a9", kill_on_drop: false }`
[INFO] [stdout] b1e7889f6eaf68a6e34d3f050727cdbfc7014856c5fe4d82244437ead2fb53a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6ccfe47588257d5f6cfc20c2e0ac47e11725a0da0b7d6375b823fbcbf22a1678
[INFO] running `Command { std: "docker" "start" "-a" "6ccfe47588257d5f6cfc20c2e0ac47e11725a0da0b7d6375b823fbcbf22a1678", kill_on_drop: false }`
[INFO] [stderr]    Compiling plushuang-metrics v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sys`
[INFO] [stdout]    --> src/lib.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn total_space(sys: &mut System) -> Result<u64, String> {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_sys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sys`
[INFO] [stdout]    --> src/lib.rs:123:24
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn available_space(sys: &mut System) -> Result<u64, String> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_sys`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sys`
[INFO] [stdout]    --> src/lib.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn total_space(sys: &mut System) -> Result<u64, String> {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_sys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sys`
[INFO] [stdout]    --> src/lib.rs:123:24
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn available_space(sys: &mut System) -> Result<u64, String> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_sys`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "6ccfe47588257d5f6cfc20c2e0ac47e11725a0da0b7d6375b823fbcbf22a1678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ccfe47588257d5f6cfc20c2e0ac47e11725a0da0b7d6375b823fbcbf22a1678", kill_on_drop: false }`
[INFO] [stdout] 6ccfe47588257d5f6cfc20c2e0ac47e11725a0da0b7d6375b823fbcbf22a1678