[INFO] crate jcompiler 0.1.0 is already in cache
[INFO] checking jcompiler-0.1.0 against master#6d69caba110c0c2fb90180df1cbc8be5033b91d4 for pr-69530
[INFO] extracting crate jcompiler 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate jcompiler 0.1.0 on toolchain 6d69caba110c0c2fb90180df1cbc8be5033b91d4
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate jcompiler 0.1.0
[INFO] finished tweaking crates.io crate jcompiler 0.1.0
[INFO] tweaked toml for crates.io crate jcompiler 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "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] 850a76615f0c1b7db3bff98e4607147779cca3d0d15c9526fc42e8ca1863bf45
[INFO] running `"docker" "start" "-a" "850a76615f0c1b7db3bff98e4607147779cca3d0d15c9526fc42e8ca1863bf45"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling llvm-sys v70.2.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck v0.3.2
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking jcompiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `init_bb`
[INFO] [stderr]   --> src/lib/llvm.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let (init_bb, mut bb) = add_initial_bbs(&mut module, main_fn);
[INFO] [stderr]    |          ^^^^^^^ help: consider prefixing with an underscore: `_init_bb`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `init_bb`
[INFO] [stderr]   --> src/lib/llvm.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let (init_bb, mut bb) = add_initial_bbs(&mut module, main_fn);
[INFO] [stderr]    |          ^^^^^^^ help: consider prefixing with an underscore: `_init_bb`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LLVM_TRUE`
[INFO] [stderr]   --> src/lib/llvm.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const LLVM_TRUE: LLVMBool = 1;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `int8`
[INFO] [stderr]    --> src/lib/llvm.rs:270:11
[INFO] [stderr]     |
[INFO] [stderr] 270 | unsafe fn int8(val: c_ulonglong) -> LLVMValueRef {
[INFO] [stderr]     |           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compile_static_outputs`
[INFO] [stderr]    --> src/lib/llvm.rs:439:4
[INFO] [stderr]     |
[INFO] [stderr] 439 | fn compile_static_outputs(module: &mut Module, bb: LLVMBasicBlockRef, outputs: &[i8]) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LLVM_TRUE`
[INFO] [stderr]   --> src/lib/llvm.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const LLVM_TRUE: LLVMBool = 1;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `int8`
[INFO] [stderr]    --> src/lib/llvm.rs:270:11
[INFO] [stderr]     |
[INFO] [stderr] 270 | unsafe fn int8(val: c_ulonglong) -> LLVMValueRef {
[INFO] [stderr]     |           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compile_static_outputs`
[INFO] [stderr]    --> src/lib/llvm.rs:439:4
[INFO] [stderr]     |
[INFO] [stderr] 439 | fn compile_static_outputs(module: &mut Module, bb: LLVMBasicBlockRef, outputs: &[i8]) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:74:23
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let object_file = try!(convert_io_error(NamedTempFile::new()));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:74:23
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let object_file = try!(convert_io_error(NamedTempFile::new()));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.21s
[INFO] running `"docker" "inspect" "850a76615f0c1b7db3bff98e4607147779cca3d0d15c9526fc42e8ca1863bf45"`
[INFO] running `"docker" "rm" "-f" "850a76615f0c1b7db3bff98e4607147779cca3d0d15c9526fc42e8ca1863bf45"`
[INFO] [stdout] 850a76615f0c1b7db3bff98e4607147779cca3d0d15c9526fc42e8ca1863bf45