[INFO] fetching crate qopt 0.19.4...
[INFO] testing qopt-0.19.4 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate qopt 0.19.4 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate qopt 0.19.4
[INFO] finished tweaking crates.io crate qopt 0.19.4
[INFO] tweaked toml for crates.io crate qopt 0.19.4 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate qopt 0.19.4 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding maria-linalg v0.10.0 (available: v1.0.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_distr v0.4.3 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maria-linalg v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd338e348380169519ab28d0201d84dc14b6240178b850abb53b311070d26965
[INFO] running `Command { std: "docker" "start" "-a" "fd338e348380169519ab28d0201d84dc14b6240178b850abb53b311070d26965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd338e348380169519ab28d0201d84dc14b6240178b850abb53b311070d26965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd338e348380169519ab28d0201d84dc14b6240178b850abb53b311070d26965", kill_on_drop: false }`
[INFO] [stdout] fd338e348380169519ab28d0201d84dc14b6240178b850abb53b311070d26965
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b87142bb58b758306c717e5ddda769c693afb8ac018a64f6e264e75fb3aedf4d
[INFO] running `Command { std: "docker" "start" "-a" "b87142bb58b758306c717e5ddda769c693afb8ac018a64f6e264e75fb3aedf4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling maria-linalg v0.10.0
[INFO] [stderr]    Compiling qopt v0.19.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `error` and `help`
[INFO] [stdout]   --> src/optimizer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     help,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "b87142bb58b758306c717e5ddda769c693afb8ac018a64f6e264e75fb3aedf4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b87142bb58b758306c717e5ddda769c693afb8ac018a64f6e264e75fb3aedf4d", kill_on_drop: false }`
[INFO] [stdout] b87142bb58b758306c717e5ddda769c693afb8ac018a64f6e264e75fb3aedf4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34fa9ab2248afbeb6af6c7c390cadfe233ecbfcc8da15044f99c9982c38f1419
[INFO] running `Command { std: "docker" "start" "-a" "34fa9ab2248afbeb6af6c7c390cadfe233ecbfcc8da15044f99c9982c38f1419", kill_on_drop: false }`
[INFO] [stderr]    Compiling qopt v0.19.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `error` and `help`
[INFO] [stdout]   --> src/optimizer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     help,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error` and `help`
[INFO] [stdout]   --> src/optimizer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     help,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "34fa9ab2248afbeb6af6c7c390cadfe233ecbfcc8da15044f99c9982c38f1419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34fa9ab2248afbeb6af6c7c390cadfe233ecbfcc8da15044f99c9982c38f1419", kill_on_drop: false }`
[INFO] [stdout] 34fa9ab2248afbeb6af6c7c390cadfe233ecbfcc8da15044f99c9982c38f1419
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a6a14fbe6c0f6d8b6951edec92a7cd2e77a1314e243d7689210fe5dc9837c4f
[INFO] running `Command { std: "docker" "start" "-a" "2a6a14fbe6c0f6d8b6951edec92a7cd2e77a1314e243d7689210fe5dc9837c4f", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `error` and `help`
[INFO] [stderr]   --> src/optimizer.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     error,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 16 |     help,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `qopt` (lib) generated 1 warning (run `cargo fix --lib -p qopt` to apply 1 suggestion)
[INFO] [stderr] warning: `qopt` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/qopt-0acac0f5cc7b4dfe)
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests qopt
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a6a14fbe6c0f6d8b6951edec92a7cd2e77a1314e243d7689210fe5dc9837c4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6a14fbe6c0f6d8b6951edec92a7cd2e77a1314e243d7689210fe5dc9837c4f", kill_on_drop: false }`
[INFO] [stdout] 2a6a14fbe6c0f6d8b6951edec92a7cd2e77a1314e243d7689210fe5dc9837c4f