[INFO] fetching crate cop 0.2.0...
[INFO] checking cop-0.2.0 against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] extracting crate cop 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate cop 0.2.0
[INFO] finished tweaking crates.io crate cop 0.2.0
[INFO] tweaked toml for crates.io crate cop 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cop 0.2.0 on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding hashbrown v0.9.1 (available: v0.17.1)
[INFO] [stderr]       Adding num-bigint v0.4.8 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colosseum v0.2.2
[INFO] [stderr]   Downloaded tptp v0.31.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785
[INFO] running `Command { std: "docker" "start" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking colosseum v0.2.2
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]     Checking tptp v0.31.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking cop v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lean/matrix.rs:22:28
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn contrapositives(&self) -> impl Iterator<Item = Contrapositive<Lit<P, C, V>, V>> {
[INFO] [stdout]    |                            ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn contrapositives(&self) -> impl Iterator<Item = Contrapositive<'_, Lit<P, C, V>, V>> {
[INFO] [stdout]    |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/nano/contrapositive.rs:150:20
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn pre_cps(&self) -> impl Iterator<Item = PreCp<Lit<P, C, V>, V>> {
[INFO] [stdout]     |                    ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn pre_cps(&self) -> impl Iterator<Item = PreCp<'_, Lit<P, C, V>, V>> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lean/matrix.rs:22:28
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn contrapositives(&self) -> impl Iterator<Item = Contrapositive<Lit<P, C, V>, V>> {
[INFO] [stdout]    |                            ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn contrapositives(&self) -> impl Iterator<Item = Contrapositive<'_, Lit<P, C, V>, V>> {
[INFO] [stdout]    |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/nano/contrapositive.rs:150:20
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn pre_cps(&self) -> impl Iterator<Item = PreCp<Lit<P, C, V>, V>> {
[INFO] [stdout]     |                    ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn pre_cps(&self) -> impl Iterator<Item = PreCp<'_, Lit<P, C, V>, V>> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.76s
[INFO] running `Command { std: "docker" "inspect" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785", kill_on_drop: false }`
[INFO] [stdout] de8082bf33102ee591c9dc70fe4c47e8c1470d18113ec8e5eaa6c35f48794785
