[INFO] fetching crate metron_library 0.0.1...
[INFO] checking metron_library-0.0.1 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate metron_library 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate metron_library 0.0.1 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metron_library 0.0.1
[INFO] finished tweaking crates.io crate metron_library 0.0.1
[INFO] tweaked toml for crates.io crate metron_library 0.0.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metron_core v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab3e6bdcce42f4f78773ea2c83e6b2cfba20c422e13b61ea365de59efb978fe0
[INFO] running `Command { std: "docker" "start" "-a" "ab3e6bdcce42f4f78773ea2c83e6b2cfba20c422e13b61ea365de59efb978fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab3e6bdcce42f4f78773ea2c83e6b2cfba20c422e13b61ea365de59efb978fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab3e6bdcce42f4f78773ea2c83e6b2cfba20c422e13b61ea365de59efb978fe0", kill_on_drop: false }`
[INFO] [stdout] ab3e6bdcce42f4f78773ea2c83e6b2cfba20c422e13b61ea365de59efb978fe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbca78339676e0d68f2fa62933147cf984bd814bba57577b5fdb4ec5859db61f
[INFO] running `Command { std: "docker" "start" "-a" "cbca78339676e0d68f2fa62933147cf984bd814bba57577b5fdb4ec5859db61f", kill_on_drop: false }`
[INFO] [stderr]     Checking metron_core v0.0.1
[INFO] [stderr]     Checking metron_library v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `impl_unit_from`
[INFO] [stdout]  --> src/systems/international_system_of_units/units/non_si/unitless.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use metron_core::{def_unit, impl_unit_from};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/systems/international_system_of_units/units/non_si/unitless.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             (num * 1.0)
[INFO] [stdout]    |             ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Mul`
[INFO] [stdout]   --> src/systems/international_system_of_units/units/non_si/unitless.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         use std::ops::Mul;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Formatter`
[INFO] [stdout]   --> src/systems/international_system_of_units/units/non_si/unitless.rs:89:24
[INFO] [stdout]    |
[INFO] [stdout] 89 |         use std::fmt::{Debug, Formatter};
[INFO] [stdout]    |                        ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Percent`
[INFO] [stdout]   --> src/systems/international_system_of_units/units/non_si/unitless.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub struct Percent<M> {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PercentPoint`
[INFO] [stdout]   --> src/systems/international_system_of_units/units/non_si/unitless.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub struct PercentPoint<M> {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Percent`
[INFO] [stdout]   --> src/systems/international_system_of_units/units/non_si/unitless.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         type Percent<N, D> = metron_core::Measure<N, super::Percent<D>>;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "cbca78339676e0d68f2fa62933147cf984bd814bba57577b5fdb4ec5859db61f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbca78339676e0d68f2fa62933147cf984bd814bba57577b5fdb4ec5859db61f", kill_on_drop: false }`
[INFO] [stdout] cbca78339676e0d68f2fa62933147cf984bd814bba57577b5fdb4ec5859db61f