[INFO] fetching crate product-os-tower-layer 0.0.2...
[INFO] building product-os-tower-layer-0.0.2 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate product-os-tower-layer 0.0.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate product-os-tower-layer 0.0.2
[INFO] finished tweaking crates.io crate product-os-tower-layer 0.0.2
[INFO] tweaked toml for crates.io crate product-os-tower-layer 0.0.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate product-os-tower-layer 0.0.2 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d4d09fe7588403b4fb1da8f00d3288b238f41a306b34b8e25c3a37bb8e8ccda
[INFO] running `Command { std: "docker" "start" "-a" "8d4d09fe7588403b4fb1da8f00d3288b238f41a306b34b8e25c3a37bb8e8ccda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d4d09fe7588403b4fb1da8f00d3288b238f41a306b34b8e25c3a37bb8e8ccda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d4d09fe7588403b4fb1da8f00d3288b238f41a306b34b8e25c3a37bb8e8ccda", kill_on_drop: false }`
[INFO] [stdout] 8d4d09fe7588403b4fb1da8f00d3288b238f41a306b34b8e25c3a37bb8e8ccda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49a6f55b44b7b5b9222a92f1ca6de2c8040e3e48c2de05ce7a643e0ac7ed5bf9
[INFO] running `Command { std: "docker" "start" "-a" "49a6f55b44b7b5b9222a92f1ca6de2c8040e3e48c2de05ce7a643e0ac7ed5bf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling no-std-compat v0.4.1
[INFO] [stderr]    Compiling product-os-tower-layer v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::prelude::v1::*`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::prelude::v1::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "49a6f55b44b7b5b9222a92f1ca6de2c8040e3e48c2de05ce7a643e0ac7ed5bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a6f55b44b7b5b9222a92f1ca6de2c8040e3e48c2de05ce7a643e0ac7ed5bf9", kill_on_drop: false }`
[INFO] [stdout] 49a6f55b44b7b5b9222a92f1ca6de2c8040e3e48c2de05ce7a643e0ac7ed5bf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 558a244a4f8a6d5301d4c09ee5f880c0b290116325cbd60f7d8583c36687875a
[INFO] running `Command { std: "docker" "start" "-a" "558a244a4f8a6d5301d4c09ee5f880c0b290116325cbd60f7d8583c36687875a", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::prelude::v1::*`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::prelude::v1::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling product-os-tower-layer v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::prelude::v1::*`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::prelude::v1::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "558a244a4f8a6d5301d4c09ee5f880c0b290116325cbd60f7d8583c36687875a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "558a244a4f8a6d5301d4c09ee5f880c0b290116325cbd60f7d8583c36687875a", kill_on_drop: false }`
[INFO] [stdout] 558a244a4f8a6d5301d4c09ee5f880c0b290116325cbd60f7d8583c36687875a