[INFO] fetching crate dicegen 0.1.0...
[INFO] testing dicegen-0.1.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate dicegen 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate dicegen 0.1.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dicegen 0.1.0
[INFO] finished tweaking crates.io crate dicegen 0.1.0
[INFO] tweaked toml for crates.io crate dicegen 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate dicegen 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.8.1
[INFO] [stderr]   Downloaded libc v0.2.81
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 336e733f0e905b8fe155837ca719dd9dd16767d97b3e1bb0c948dac8095881bf
[INFO] running `Command { std: "docker" "start" "-a" "336e733f0e905b8fe155837ca719dd9dd16767d97b3e1bb0c948dac8095881bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "336e733f0e905b8fe155837ca719dd9dd16767d97b3e1bb0c948dac8095881bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "336e733f0e905b8fe155837ca719dd9dd16767d97b3e1bb0c948dac8095881bf", kill_on_drop: false }`
[INFO] [stdout] 336e733f0e905b8fe155837ca719dd9dd16767d97b3e1bb0c948dac8095881bf
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99e5306cc233d313c93a447f62b9b4155a89c36223da2a1871d9081fbf76c85a
[INFO] running `Command { std: "docker" "start" "-a" "99e5306cc233d313c93a447f62b9b4155a89c36223da2a1871d9081fbf76c85a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.1
[INFO] [stderr]    Compiling dicegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_lines`
[INFO] [stdout]  --> src/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
[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 13.32s
[INFO] running `Command { std: "docker" "inspect" "99e5306cc233d313c93a447f62b9b4155a89c36223da2a1871d9081fbf76c85a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99e5306cc233d313c93a447f62b9b4155a89c36223da2a1871d9081fbf76c85a", kill_on_drop: false }`
[INFO] [stdout] 99e5306cc233d313c93a447f62b9b4155a89c36223da2a1871d9081fbf76c85a
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab40a2b33c49187ac2482a922a93b63f2c871c292102bd5170a923e4e698c481
[INFO] running `Command { std: "docker" "start" "-a" "ab40a2b33c49187ac2482a922a93b63f2c871c292102bd5170a923e4e698c481", kill_on_drop: false }`
[INFO] [stderr]    Compiling dicegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_lines`
[INFO] [stdout]  --> src/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
[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 test [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `Command { std: "docker" "inspect" "ab40a2b33c49187ac2482a922a93b63f2c871c292102bd5170a923e4e698c481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab40a2b33c49187ac2482a922a93b63f2c871c292102bd5170a923e4e698c481", kill_on_drop: false }`
[INFO] [stdout] ab40a2b33c49187ac2482a922a93b63f2c871c292102bd5170a923e4e698c481
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6cdac8931300800349d30aa7978236f44c9b94bfa66c719dd97b70a2d65bb87a
[INFO] running `Command { std: "docker" "start" "-a" "6cdac8931300800349d30aa7978236f44c9b94bfa66c719dd97b70a2d65bb87a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `read_lines`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/utils.rs:5:8
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 5 | pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
[INFO] [stdout] 
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dicegen-d70f16cb3da9d13b)
[INFO] running `Command { std: "docker" "inspect" "6cdac8931300800349d30aa7978236f44c9b94bfa66c719dd97b70a2d65bb87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cdac8931300800349d30aa7978236f44c9b94bfa66c719dd97b70a2d65bb87a", kill_on_drop: false }`
[INFO] [stdout] 6cdac8931300800349d30aa7978236f44c9b94bfa66c719dd97b70a2d65bb87a