[INFO] fetching crate inertia-algebra 0.1.0...
[INFO] checking inertia-algebra-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate inertia-algebra 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate inertia-algebra 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate inertia-algebra 0.1.0
[INFO] finished tweaking crates.io crate inertia-algebra 0.1.0
[INFO] tweaked toml for crates.io crate inertia-algebra 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate inertia-algebra 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v0.9.2
[INFO] [stderr]   Downloaded regex v1.7.0
[INFO] [stderr]   Downloaded libc v0.2.138
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22f20733a0c6688f8cadefd28c538876cbf51ddebb1cb61f66d32d7f0c304acd
[INFO] running `Command { std: "docker" "start" "-a" "22f20733a0c6688f8cadefd28c538876cbf51ddebb1cb61f66d32d7f0c304acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22f20733a0c6688f8cadefd28c538876cbf51ddebb1cb61f66d32d7f0c304acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22f20733a0c6688f8cadefd28c538876cbf51ddebb1cb61f66d32d7f0c304acd", kill_on_drop: false }`
[INFO] [stdout] 22f20733a0c6688f8cadefd28c538876cbf51ddebb1cb61f66d32d7f0c304acd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0e31632e78b2c3fde4384fb2431da2fa7cca44efc717323715c61cbc27c080e
[INFO] running `Command { std: "docker" "start" "-a" "a0e31632e78b2c3fde4384fb2431da2fa7cca44efc717323715c61cbc27c080e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking inertia-algebra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]  --> src/wrapper.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::{Ordering, PartialOrd};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialOrd` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stdout] warning: unused import: `inertia_algebra::structures::*`
[INFO] [stdout]  --> examples/wrapping.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use inertia_algebra::structures::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `inertia_algebra::properties::*`
[INFO] [stdout]  --> examples/wrapping.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use inertia_algebra::properties::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `inertia_algebra::structures::*`
[INFO] [stdout]  --> tests/../examples/wrapping.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use inertia_algebra::structures::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `inertia_algebra::properties::*`
[INFO] [stdout]  --> tests/../examples/wrapping.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use inertia_algebra::properties::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]  --> src/wrapper.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::{Ordering, PartialOrd};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialOrd` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]   --> tests/wrapping.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |         fn is_ring(arg: (Wrap<i8>,)) -> bool {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `arg` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> tests/wrapping.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     quickcheck! {
[INFO] [stdout] 17 | |         fn is_ring(arg: (Wrap<i8>,)) -> bool {
[INFO] [stdout] 18 | |             // TODO
[INFO] [stdout] 19 | |             false
[INFO] [stdout] 20 | |         }
[INFO] [stdout] 21 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `quickcheck` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.89s
[INFO] running `Command { std: "docker" "inspect" "a0e31632e78b2c3fde4384fb2431da2fa7cca44efc717323715c61cbc27c080e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0e31632e78b2c3fde4384fb2431da2fa7cca44efc717323715c61cbc27c080e", kill_on_drop: false }`
[INFO] [stdout] a0e31632e78b2c3fde4384fb2431da2fa7cca44efc717323715c61cbc27c080e