[INFO] cloning repository https://github.com/prestwich/eip2539_go_bindings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prestwich/eip2539_go_bindings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprestwich%2Feip2539_go_bindings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprestwich%2Feip2539_go_bindings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d370abfabbf3a4ea2697868f2f905409d3d8012
[INFO] checking prestwich/eip2539_go_bindings against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprestwich%2Feip2539_go_bindings" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/prestwich/eip2539_go_bindings
[INFO] finished tweaking git repo https://github.com/prestwich/eip2539_go_bindings
[INFO] tweaked toml for git repo https://github.com/prestwich/eip2539_go_bindings written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/prestwich/eip2539_go_bindings on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/prestwich/eip2539_go_bindings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking prestwich/eip2539_go_bindings against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprestwich%2Feip2539_go_bindings" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/prestwich/eip2539_go_bindings
[INFO] finished tweaking git repo https://github.com/prestwich/eip2539_go_bindings
[INFO] tweaked toml for git repo https://github.com/prestwich/eip2539_go_bindings written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/prestwich/eip2539_go_bindings on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/prestwich/eip2539_go_bindings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hex v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2de26011c20df8358f320459c3fc15c73184d2a443b2581d35028f4ffd1eb527
[INFO] running `Command { std: "docker" "start" "-a" "2de26011c20df8358f320459c3fc15c73184d2a443b2581d35028f4ffd1eb527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2de26011c20df8358f320459c3fc15c73184d2a443b2581d35028f4ffd1eb527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de26011c20df8358f320459c3fc15c73184d2a443b2581d35028f4ffd1eb527", kill_on_drop: false }`
[INFO] [stdout] 2de26011c20df8358f320459c3fc15c73184d2a443b2581d35028f4ffd1eb527
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71447617fd098ccf1bce061ea56bfa8139b38fab8b668f64c38eb31c5b12352e
[INFO] running `Command { std: "docker" "start" "-a" "71447617fd098ccf1bce061ea56bfa8139b38fab8b668f64c38eb31c5b12352e", kill_on_drop: false }`
[INFO] [stderr]    Compiling eth_pairings_go_2539 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hex v0.4.0
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/lib.rs:11:62
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let raw_operation_value: std::os::raw::c_char = unsafe { std::mem::transmute(operation.as_u8()) };
[INFO] [stdout]    |                                                              -------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                              |
[INFO] [stdout]    |                                                              help: replace this with: `u8::cast_signed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/lib.rs:11:62
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let raw_operation_value: std::os::raw::c_char = unsafe { std::mem::transmute(operation.as_u8()) };
[INFO] [stdout]    |                                                              -------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                              |
[INFO] [stdout]    |                                                              help: replace this with: `u8::cast_signed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "71447617fd098ccf1bce061ea56bfa8139b38fab8b668f64c38eb31c5b12352e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71447617fd098ccf1bce061ea56bfa8139b38fab8b668f64c38eb31c5b12352e", kill_on_drop: false }`
[INFO] [stdout] 71447617fd098ccf1bce061ea56bfa8139b38fab8b668f64c38eb31c5b12352e