[INFO] fetching crate skillratings 0.27.1...
[INFO] building skillratings-0.27.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate skillratings 0.27.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate skillratings 0.27.1
[INFO] finished tweaking crates.io crate skillratings 0.27.1
[INFO] tweaked toml for crates.io crate skillratings 0.27.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate skillratings 0.27.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 72 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f104b3656982adb788739e65579d0f0b19b41c5425aa64c6b5b6efe92a9344ab
[INFO] running `Command { std: "docker" "start" "-a" "f104b3656982adb788739e65579d0f0b19b41c5425aa64c6b5b6efe92a9344ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f104b3656982adb788739e65579d0f0b19b41c5425aa64c6b5b6efe92a9344ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f104b3656982adb788739e65579d0f0b19b41c5425aa64c6b5b6efe92a9344ab", kill_on_drop: false }`
[INFO] [stdout] f104b3656982adb788739e65579d0f0b19b41c5425aa64c6b5b6efe92a9344ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a371d59b5258e1e3bb51cf65b1f0b84e7766c5bd1d17f9277c953a674ed13e8e
[INFO] running `Command { std: "docker" "start" "-a" "a371d59b5258e1e3bb51cf65b1f0b84e7766c5bd1d17f9277c953a674ed13e8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling skillratings v0.27.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/trueskill/matrix.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |         assert!((det != 0.0), "Matrix is not invertible");
[INFO] [stdout]     |                 ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 151 -         assert!((det != 0.0), "Matrix is not invertible");
[INFO] [stdout] 151 +         assert!( det != 0.0, "Matrix is not invertible");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]     --> src/trueskill/mod.rs:1645:13
[INFO] [stdout]      |
[INFO] [stdout] 1645 |     assert!((min_delta > 0.0), "min_delta must be greater than 0");
[INFO] [stdout]      |             ^               ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1645 -     assert!((min_delta > 0.0), "min_delta must be greater than 0");
[INFO] [stdout] 1645 +     assert!( min_delta > 0.0, "min_delta must be greater than 0");
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib.rs:446:5
[INFO] [stdout]     |
[INFO] [stdout] 446 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib.rs:454:5
[INFO] [stdout]     |
[INFO] [stdout] 454 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "a371d59b5258e1e3bb51cf65b1f0b84e7766c5bd1d17f9277c953a674ed13e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a371d59b5258e1e3bb51cf65b1f0b84e7766c5bd1d17f9277c953a674ed13e8e", kill_on_drop: false }`
[INFO] [stdout] a371d59b5258e1e3bb51cf65b1f0b84e7766c5bd1d17f9277c953a674ed13e8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1445f5ad78c3837f69f16e31f4156e7f6a4bf952a04037170c72c38d0b6fbbe
[INFO] running `Command { std: "docker" "start" "-a" "f1445f5ad78c3837f69f16e31f4156e7f6a4bf952a04037170c72c38d0b6fbbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling clap_builder v4.5.48
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/trueskill/matrix.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |         assert!((det != 0.0), "Matrix is not invertible");
[INFO] [stdout]     |                 ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 151 -         assert!((det != 0.0), "Matrix is not invertible");
[INFO] [stdout] 151 +         assert!( det != 0.0, "Matrix is not invertible");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]     --> src/trueskill/mod.rs:1645:13
[INFO] [stdout]      |
[INFO] [stdout] 1645 |     assert!((min_delta > 0.0), "min_delta must be greater than 0");
[INFO] [stdout]      |             ^               ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1645 -     assert!((min_delta > 0.0), "min_delta must be greater than 0");
[INFO] [stdout] 1645 +     assert!( min_delta > 0.0, "min_delta must be greater than 0");
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib.rs:446:5
[INFO] [stdout]     |
[INFO] [stdout] 446 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib.rs:454:5
[INFO] [stdout]     |
[INFO] [stdout] 454 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling clap v4.5.48
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling skillratings v0.27.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/trueskill/matrix.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |         assert!((det != 0.0), "Matrix is not invertible");
[INFO] [stdout]     |                 ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 151 -         assert!((det != 0.0), "Matrix is not invertible");
[INFO] [stdout] 151 +         assert!( det != 0.0, "Matrix is not invertible");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]     --> src/trueskill/mod.rs:1645:13
[INFO] [stdout]      |
[INFO] [stdout] 1645 |     assert!((min_delta > 0.0), "min_delta must be greater than 0");
[INFO] [stdout]      |             ^               ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1645 -     assert!((min_delta > 0.0), "min_delta must be greater than 0");
[INFO] [stdout] 1645 +     assert!( min_delta > 0.0, "min_delta must be greater than 0");
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib.rs:446:5
[INFO] [stdout]     |
[INFO] [stdout] 446 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib.rs:454:5
[INFO] [stdout]     |
[INFO] [stdout] 454 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.99s
[INFO] running `Command { std: "docker" "inspect" "f1445f5ad78c3837f69f16e31f4156e7f6a4bf952a04037170c72c38d0b6fbbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1445f5ad78c3837f69f16e31f4156e7f6a4bf952a04037170c72c38d0b6fbbe", kill_on_drop: false }`
[INFO] [stdout] f1445f5ad78c3837f69f16e31f4156e7f6a4bf952a04037170c72c38d0b6fbbe
