[INFO] crate clingo 0.6.0 is already in cache
[INFO] checking clingo-0.6.0 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate clingo 0.6.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate clingo 0.6.0 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate clingo 0.6.0
[INFO] finished tweaking crates.io crate clingo 0.6.0
[INFO] tweaked toml for crates.io crate clingo 0.6.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate clingo 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5086e510660f179597a760cce0d2c095f909cc369040ef3a646cc36bdce1327b
[INFO] running `"docker" "start" "-a" "5086e510660f179597a760cce0d2c095f909cc369040ef3a646cc36bdce1327b"`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling clingo-derive v0.2.0
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]    Compiling clingo-sys v0.5.1
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking trybuild v1.0.19
[INFO] [stderr]     Checking clingo v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:4681:9
[INFO] [stderr]      |
[INFO] [stderr] 4681 |         (unsafe { clingo_propagate_init_number_of_threads(&self.0) } as usize)
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:4681:9
[INFO] [stderr]      |
[INFO] [stderr] 4681 |         (unsafe { clingo_propagate_init_number_of_threads(&self.0) } as usize)
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `event`
[INFO] [stderr]    --> src/lib.rs:678:9
[INFO] [stderr]     |
[INFO] [stderr] 678 |         event: *mut c_void,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `event`
[INFO] [stderr]    --> src/lib.rs:678:9
[INFO] [stderr]     |
[INFO] [stderr] 678 |         event: *mut c_void,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> examples/control.rs:53:51
[INFO] [stderr]    |
[INFO] [stderr] 53 |         .expect("Failed to add a logic program.");;
[INFO] [stderr]    |                                                   ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `clingo::ClingoError`
[INFO] [stderr]  --> tests/clingo-derive.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use clingo::ClingoError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `clingo::Symbol`
[INFO] [stderr]  --> tests/clingo-derive.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use clingo::Symbol;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `clingo::ToSymbol`
[INFO] [stderr]  --> tests/clingo-derive.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use clingo::ToSymbol;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5m 39s
[INFO] running `"docker" "inspect" "5086e510660f179597a760cce0d2c095f909cc369040ef3a646cc36bdce1327b"`
[INFO] running `"docker" "rm" "-f" "5086e510660f179597a760cce0d2c095f909cc369040ef3a646cc36bdce1327b"`
[INFO] [stdout] 5086e510660f179597a760cce0d2c095f909cc369040ef3a646cc36bdce1327b