[INFO] fetching crate jcompiler 0.1.0...
[INFO] checking jcompiler-0.1.0 against beta for pr-78714
[INFO] extracting crate jcompiler 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate jcompiler 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc7c10ed862540493c9e790e5526048542940548d9ce801e1b2b5399d9431e7d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc7c10ed862540493c9e790e5526048542940548d9ce801e1b2b5399d9431e7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc7c10ed862540493c9e790e5526048542940548d9ce801e1b2b5399d9431e7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc7c10ed862540493c9e790e5526048542940548d9ce801e1b2b5399d9431e7d", kill_on_drop: false }`
[INFO] [stdout] fc7c10ed862540493c9e790e5526048542940548d9ce801e1b2b5399d9431e7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed1c61f83ed34bf7aec8eab94495247c915d53b065c530fcb1014aa5a43be3bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ed1c61f83ed34bf7aec8eab94495247c915d53b065c530fcb1014aa5a43be3bb", kill_on_drop: false }`
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]    Compiling llvm-sys v70.4.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[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] [stdout] warning: unused variable: `init_bb`
[INFO] [stdout]   --> src/lib/llvm.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let (init_bb, mut bb) = add_initial_bbs(&mut module, main_fn);
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_init_bb`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `init_bb`
[INFO] [stdout]   --> src/lib/llvm.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let (init_bb, mut bb) = add_initial_bbs(&mut module, main_fn);
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_init_bb`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LLVM_TRUE`
[INFO] [stdout]   --> src/lib/llvm.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const LLVM_TRUE: LLVMBool = 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `int8`
[INFO] [stdout]    --> src/lib/llvm.rs:270:11
[INFO] [stdout]     |
[INFO] [stdout] 270 | unsafe fn int8(val: c_ulonglong) -> LLVMValueRef {
[INFO] [stdout]     |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compile_static_outputs`
[INFO] [stdout]    --> src/lib/llvm.rs:439:4
[INFO] [stdout]     |
[INFO] [stdout] 439 | fn compile_static_outputs(module: &mut Module, bb: LLVMBasicBlockRef, outputs: &[i8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LLVM_TRUE`
[INFO] [stdout]   --> src/lib/llvm.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const LLVM_TRUE: LLVMBool = 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `int8`
[INFO] [stdout]    --> src/lib/llvm.rs:270:11
[INFO] [stdout]     |
[INFO] [stdout] 270 | unsafe fn int8(val: c_ulonglong) -> LLVMValueRef {
[INFO] [stdout]     |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compile_static_outputs`
[INFO] [stdout]    --> src/lib/llvm.rs:439:4
[INFO] [stdout]     |
[INFO] [stdout] 439 | fn compile_static_outputs(module: &mut Module, bb: LLVMBasicBlockRef, outputs: &[i8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:74:23
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let object_file = try!(convert_io_error(NamedTempFile::new()));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:74:23
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let object_file = try!(convert_io_error(NamedTempFile::new()));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.80s
[INFO] running `Command { std: "docker" "inspect" "ed1c61f83ed34bf7aec8eab94495247c915d53b065c530fcb1014aa5a43be3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed1c61f83ed34bf7aec8eab94495247c915d53b065c530fcb1014aa5a43be3bb", kill_on_drop: false }`
[INFO] [stdout] ed1c61f83ed34bf7aec8eab94495247c915d53b065c530fcb1014aa5a43be3bb