[INFO] fetching crate gap_solver 0.2.0...
[INFO] checking gap_solver-0.2.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate gap_solver 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate gap_solver 0.2.0
[INFO] finished tweaking crates.io crate gap_solver 0.2.0
[INFO] tweaked toml for crates.io crate gap_solver 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gap_solver 0.2.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0e804ecfd085a27ca65a1e1970fe49838cb6bb238ab476f3809ac8d21a24cb9
[INFO] running `Command { std: "docker" "start" "-a" "c0e804ecfd085a27ca65a1e1970fe49838cb6bb238ab476f3809ac8d21a24cb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0e804ecfd085a27ca65a1e1970fe49838cb6bb238ab476f3809ac8d21a24cb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0e804ecfd085a27ca65a1e1970fe49838cb6bb238ab476f3809ac8d21a24cb9", kill_on_drop: false }`
[INFO] [stdout] c0e804ecfd085a27ca65a1e1970fe49838cb6bb238ab476f3809ac8d21a24cb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be57afcbf80ded5ff27a1bad42f269a2a42bdea2b0d0cf2baec4144a3fc455aa
[INFO] running `Command { std: "docker" "start" "-a" "be57afcbf80ded5ff27a1bad42f269a2a42bdea2b0d0cf2baec4144a3fc455aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking gap_solver v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/solver.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn solve<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<A, T, C, P>>
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^             ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn solve<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<'_, A, T, C, P>>
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/solver.rs:56:36
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn init_open_set<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<A, T, C, P>>
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^             ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn init_open_set<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<'_, A, T, C, P>>
[INFO] [stdout]    |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/solver.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn solve<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<A, T, C, P>>
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^             ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn solve<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<'_, A, T, C, P>>
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/solver.rs:56:36
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn init_open_set<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<A, T, C, P>>
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^             ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn init_open_set<A, T, C, P>(spec: &GapSpec<A, T, C, P>) -> HashSet<Assignment<'_, A, T, C, P>>
[INFO] [stdout]    |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `Command { std: "docker" "inspect" "be57afcbf80ded5ff27a1bad42f269a2a42bdea2b0d0cf2baec4144a3fc455aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be57afcbf80ded5ff27a1bad42f269a2a42bdea2b0d0cf2baec4144a3fc455aa", kill_on_drop: false }`
[INFO] [stdout] be57afcbf80ded5ff27a1bad42f269a2a42bdea2b0d0cf2baec4144a3fc455aa