[INFO] cloning repository https://github.com/mrLSD/llvm-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrLSD/llvm-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Fllvm-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Fllvm-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3677474457a1548d53598c7c8b11c120d0beb0f
[INFO] checking mrLSD/llvm-sample against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Fllvm-sample" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrLSD/llvm-sample on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrLSD/llvm-sample
[INFO] finished tweaking git repo https://github.com/mrLSD/llvm-sample
[INFO] tweaked toml for git repo https://github.com/mrLSD/llvm-sample written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mrLSD/llvm-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/TheDan64/inkwell`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.8.0
[INFO] [stderr]   Downloaded either v1.6.1
[INFO] [stderr]   Downloaded cloudabi v0.1.0
[INFO] [stderr]   Downloaded smallvec v1.4.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.23
[INFO] [stderr]   Downloaded syn v1.0.42
[INFO] [stderr]   Downloaded once_cell v1.4.1
[INFO] [stderr]   Downloaded scopeguard v1.1.0
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] [stderr]   Downloaded lock_api v0.4.1
[INFO] [stderr]   Downloaded cc v1.0.61
[INFO] [stderr]   Downloaded instant v0.1.7
[INFO] [stderr]   Downloaded llvm-sys v100.2.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded parking_lot v0.11.0
[INFO] [stderr]   Downloaded semver-parser v0.7.0
[INFO] [stderr]   Downloaded semver v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fff4efe3963411fe1da1c1e68ad158759c24c3e4e556145ec663b87904729a89
[INFO] running `Command { std: "docker" "start" "-a" "fff4efe3963411fe1da1c1e68ad158759c24c3e4e556145ec663b87904729a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fff4efe3963411fe1da1c1e68ad158759c24c3e4e556145ec663b87904729a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff4efe3963411fe1da1c1e68ad158759c24c3e4e556145ec663b87904729a89", kill_on_drop: false }`
[INFO] [stdout] fff4efe3963411fe1da1c1e68ad158759c24c3e4e556145ec663b87904729a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f42802dae314585b75d6e51a55d470c0ae850256d6cfaca779ce5a47e437ff2e
[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" "f42802dae314585b75d6e51a55d470c0ae850256d6cfaca779ce5a47e437ff2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?rev=7b2e20f#7b2e20f9)
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling llvm-sys v100.2.0
[INFO] [stderr]    Compiling inkwell_internals v0.2.0 (https://github.com/TheDan64/inkwell?rev=7b2e20f#7b2e20f9)
[INFO] [stderr]     Checking llvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:66:2
[INFO] [stdout]    |
[INFO] [stdout] 66 |     std::fs::create_dir("bin");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:70:2
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     Command::new("ar")
[INFO] [stdout] 71 | |         .args(&["crs", "bin/libap.a", "bin/app.o"])
[INFO] [stdout] 72 | |         .spawn()
[INFO] [stdout] 73 | |         .expect("Expect success")
[INFO] [stdout] 74 | |         .wait();
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:84:2
[INFO] [stdout]    |
[INFO] [stdout] 84 | /     Command::new("ld")
[INFO] [stdout] 85 | |         .args(&[ 
[INFO] [stdout] 86 | |             "-o", "bin/ap",
[INFO] [stdout] 87 | |             "-dynamic-linker",
[INFO] [stdout] ...  |
[INFO] [stdout] 95 | |         .expect("Expect success")
[INFO] [stdout] 96 | |         .wait();
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:97:2
[INFO] [stdout]    |
[INFO] [stdout] 97 |     std::fs::remove_file(Path::new("bin/app.o"));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:66:2
[INFO] [stdout]    |
[INFO] [stdout] 66 |     std::fs::create_dir("bin");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:70:2
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     Command::new("ar")
[INFO] [stdout] 71 | |         .args(&["crs", "bin/libap.a", "bin/app.o"])
[INFO] [stdout] 72 | |         .spawn()
[INFO] [stdout] 73 | |         .expect("Expect success")
[INFO] [stdout] 74 | |         .wait();
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:84:2
[INFO] [stdout]    |
[INFO] [stdout] 84 | /     Command::new("ld")
[INFO] [stdout] 85 | |         .args(&[ 
[INFO] [stdout] 86 | |             "-o", "bin/ap",
[INFO] [stdout] 87 | |             "-dynamic-linker",
[INFO] [stdout] ...  |
[INFO] [stdout] 95 | |         .expect("Expect success")
[INFO] [stdout] 96 | |         .wait();
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:97:2
[INFO] [stdout]    |
[INFO] [stdout] 97 |     std::fs::remove_file(Path::new("bin/app.o"));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.63s
[INFO] running `Command { std: "docker" "inspect" "f42802dae314585b75d6e51a55d470c0ae850256d6cfaca779ce5a47e437ff2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f42802dae314585b75d6e51a55d470c0ae850256d6cfaca779ce5a47e437ff2e", kill_on_drop: false }`
[INFO] [stdout] f42802dae314585b75d6e51a55d470c0ae850256d6cfaca779ce5a47e437ff2e