[INFO] fetching crate metron_library 0.0.1...
[INFO] checking metron_library-0.0.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate metron_library 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate metron_library 0.0.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba712cd5608ce4254e4420bc44a50d41d46790bf7fbee2dadccf1be7f81f1a91
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba712cd5608ce4254e4420bc44a50d41d46790bf7fbee2dadccf1be7f81f1a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba712cd5608ce4254e4420bc44a50d41d46790bf7fbee2dadccf1be7f81f1a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba712cd5608ce4254e4420bc44a50d41d46790bf7fbee2dadccf1be7f81f1a91", kill_on_drop: false }`
[INFO] [stdout] ba712cd5608ce4254e4420bc44a50d41d46790bf7fbee2dadccf1be7f81f1a91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 43c296fd39198b9f6c32a70b9b5e11365de08a6ef4b3b8754d5a389ae6fa5431
[INFO] running `Command { std: "docker" "start" "-a" "43c296fd39198b9f6c32a70b9b5e11365de08a6ef4b3b8754d5a389ae6fa5431", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[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]    |             ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -             (num * 1.0)
[INFO] [stdout] 30 +             num * 1.0
[INFO] [stdout]    | 
[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 4.94s
[INFO] running `Command { std: "docker" "inspect" "43c296fd39198b9f6c32a70b9b5e11365de08a6ef4b3b8754d5a389ae6fa5431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c296fd39198b9f6c32a70b9b5e11365de08a6ef4b3b8754d5a389ae6fa5431", kill_on_drop: false }`
[INFO] [stdout] 43c296fd39198b9f6c32a70b9b5e11365de08a6ef4b3b8754d5a389ae6fa5431