[INFO] fetching crate metron_library 0.0.1...
[INFO] checking metron_library-0.0.1 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[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 a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", 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] cc722636d70fefdee9f131bbd7c0b908cc27623c7ff2e46e6869b68219d26b0f
[INFO] running `Command { std: "docker" "start" "-a" "cc722636d70fefdee9f131bbd7c0b908cc27623c7ff2e46e6869b68219d26b0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc722636d70fefdee9f131bbd7c0b908cc27623c7ff2e46e6869b68219d26b0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc722636d70fefdee9f131bbd7c0b908cc27623c7ff2e46e6869b68219d26b0f", kill_on_drop: false }`
[INFO] [stdout] cc722636d70fefdee9f131bbd7c0b908cc27623c7ff2e46e6869b68219d26b0f
[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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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] 84539774b60c526b594d7467c4cbc7803998bf042e385a0145a8d76a1e3c314a
[INFO] running `Command { std: "docker" "start" "-a" "84539774b60c526b594d7467c4cbc7803998bf042e385a0145a8d76a1e3c314a", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking metron_core v0.0.1
[INFO] [stderr]     Checking metron_library v0.0.1 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/systems/international_system_of_units/units/non_si/unitless.rs (4 fixes)
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.94s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking metron_library v0.0.1 (/tmp/fixit)
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "84539774b60c526b594d7467c4cbc7803998bf042e385a0145a8d76a1e3c314a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84539774b60c526b594d7467c4cbc7803998bf042e385a0145a8d76a1e3c314a", kill_on_drop: false }`
[INFO] [stdout] 84539774b60c526b594d7467c4cbc7803998bf042e385a0145a8d76a1e3c314a