[INFO] fetching crate user-mode-riscv 0.1.0...
[INFO] checking user-mode-riscv-0.1.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate user-mode-riscv 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate user-mode-riscv 0.1.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate user-mode-riscv 0.1.0
[INFO] finished tweaking crates.io crate user-mode-riscv 0.1.0
[INFO] tweaked toml for crates.io crate user-mode-riscv 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d377b53fcd5f2f94eb9908ca4fc1696d106811968452c0197478fb453c1c9a9
[INFO] running `Command { std: "docker" "start" "-a" "2d377b53fcd5f2f94eb9908ca4fc1696d106811968452c0197478fb453c1c9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d377b53fcd5f2f94eb9908ca4fc1696d106811968452c0197478fb453c1c9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d377b53fcd5f2f94eb9908ca4fc1696d106811968452c0197478fb453c1c9a9", kill_on_drop: false }`
[INFO] [stdout] 2d377b53fcd5f2f94eb9908ca4fc1696d106811968452c0197478fb453c1c9a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6aa923a6a39e64826141ce04eeba54e20f2da9b14d50715b800bfd87530ae78
[INFO] running `Command { std: "docker" "start" "-a" "a6aa923a6a39e64826141ce04eeba54e20f2da9b14d50715b800bfd87530ae78", kill_on_drop: false }`
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking user-mode-riscv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking xmas-elf v0.7.0
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]    --> src/cpu.rs:199:5
[INFO] [stdout]     |
[INFO] [stdout] 199 |     stack: Option<Vec<u8>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking elfloader v0.11.0
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]    --> src/cpu.rs:199:5
[INFO] [stdout]     |
[INFO] [stdout] 199 |     stack: Option<Vec<u8>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "a6aa923a6a39e64826141ce04eeba54e20f2da9b14d50715b800bfd87530ae78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6aa923a6a39e64826141ce04eeba54e20f2da9b14d50715b800bfd87530ae78", kill_on_drop: false }`
[INFO] [stdout] a6aa923a6a39e64826141ce04eeba54e20f2da9b14d50715b800bfd87530ae78