[INFO] fetching crate maths-traits 0.2.1...
[INFO] checking maths-traits-0.2.1 against master#aa067fb984d36462548bb785da221bfaf38253f0 for pr-122470
[INFO] extracting crate maths-traits 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate maths-traits 0.2.1 on toolchain aa067fb984d36462548bb785da221bfaf38253f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maths-traits 0.2.1
[INFO] finished tweaking crates.io crate maths-traits 0.2.1
[INFO] tweaked toml for crates.io crate maths-traits 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a7cbc59dbbd6fb4fb83f1af05a4442cd90b9247cc430e66fa9219f2ac6bc18d
[INFO] running `Command { std: "docker" "start" "-a" "9a7cbc59dbbd6fb4fb83f1af05a4442cd90b9247cc430e66fa9219f2ac6bc18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a7cbc59dbbd6fb4fb83f1af05a4442cd90b9247cc430e66fa9219f2ac6bc18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a7cbc59dbbd6fb4fb83f1af05a4442cd90b9247cc430e66fa9219f2ac6bc18d", kill_on_drop: false }`
[INFO] [stdout] 9a7cbc59dbbd6fb4fb83f1af05a4442cd90b9247cc430e66fa9219f2ac6bc18d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79ca5752393bd22fd1eb281954b6fe27a1a285a8e3167268cbc21e7e9d8342b0
[INFO] running `Command { std: "docker" "start" "-a" "79ca5752393bd22fd1eb281954b6fe27a1a285a8e3167268cbc21e7e9d8342b0", kill_on_drop: false }`
[INFO] [stderr]     Checking maths-traits v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]    --> src/lib.rs:318:12
[INFO] [stdout]     |
[INFO] [stdout] 318 | #![feature(specialization)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]    --> src/algebra/group_like.rs:106:25
[INFO] [stdout]     |
[INFO] [stdout] 106 |     use core::convert::{From};
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]    --> /rustc/aa067fb984d36462548bb785da221bfaf38253f0/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `From` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/algebra/ring_like.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | use core::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/aa067fb984d36462548bb785da221bfaf38253f0/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/algebra/integer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/aa067fb984d36462548bb785da221bfaf38253f0/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]    --> src/lib.rs:318:12
[INFO] [stdout]     |
[INFO] [stdout] 318 | #![feature(specialization)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]    --> src/algebra/group_like.rs:106:25
[INFO] [stdout]     |
[INFO] [stdout] 106 |     use core::convert::{From};
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]    --> /rustc/aa067fb984d36462548bb785da221bfaf38253f0/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `From` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/algebra/ring_like.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | use core::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/aa067fb984d36462548bb785da221bfaf38253f0/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/algebra/integer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/aa067fb984d36462548bb785da221bfaf38253f0/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/analysis/metric.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     #[inline] fn norm(&self, x:X) -> R;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `extra_log_consts` has been stable since 1.43.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:319:12
[INFO] [stdout]     |
[INFO] [stdout] 319 | #![feature(extra_log_consts)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/analysis/metric.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     #[inline] fn norm(&self, x:X) -> R;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `extra_log_consts` has been stable since 1.43.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:319:12
[INFO] [stdout]     |
[INFO] [stdout] 319 | #![feature(extra_log_consts)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "79ca5752393bd22fd1eb281954b6fe27a1a285a8e3167268cbc21e7e9d8342b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79ca5752393bd22fd1eb281954b6fe27a1a285a8e3167268cbc21e7e9d8342b0", kill_on_drop: false }`
[INFO] [stdout] 79ca5752393bd22fd1eb281954b6fe27a1a285a8e3167268cbc21e7e9d8342b0