[INFO] cloning repository https://github.com/dezgeg/nix-rebuild-stats
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dezgeg/nix-rebuild-stats" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdezgeg%2Fnix-rebuild-stats", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdezgeg%2Fnix-rebuild-stats'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 909b97402dad8ecc95d96dc685e4024476819496
[INFO] testing dezgeg/nix-rebuild-stats against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdezgeg%2Fnix-rebuild-stats" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dezgeg/nix-rebuild-stats on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dezgeg/nix-rebuild-stats
[INFO] finished tweaking git repo https://github.com/dezgeg/nix-rebuild-stats
[INFO] tweaked toml for git repo https://github.com/dezgeg/nix-rebuild-stats written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/dezgeg/nix-rebuild-stats already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c16da3670a5b963e111db11d38e8b6811f2a5800844daa4e948fa80ee032658f
[INFO] running `Command { std: "docker" "start" "-a" "c16da3670a5b963e111db11d38e8b6811f2a5800844daa4e948fa80ee032658f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c16da3670a5b963e111db11d38e8b6811f2a5800844daa4e948fa80ee032658f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c16da3670a5b963e111db11d38e8b6811f2a5800844daa4e948fa80ee032658f", kill_on_drop: false }`
[INFO] [stdout] c16da3670a5b963e111db11d38e8b6811f2a5800844daa4e948fa80ee032658f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8ddbdbb82065ab469dca4675bb9c9783fabd77fa1100d12a55b83fb007337d3
[INFO] running `Command { std: "docker" "start" "-a" "c8ddbdbb82065ab469dca4675bb9c9783fabd77fa1100d12a55b83fb007337d3", 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]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling rustc-demangle v0.1.4
[INFO] [stderr]    Compiling from-ascii v0.0.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.23
[INFO] [stderr]    Compiling backtrace-sys v0.1.10
[INFO] [stderr]    Compiling encoding_rs v0.5.0
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling quick-xml v0.6.2
[INFO] [stderr]    Compiling nix-rebuild-stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `drv_paths`
[INFO] [stdout]   --> src/main.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn build_dep_tree(drv_paths: Vec<String>) -> HashMap<String, Vec<String>> {
[INFO] [stdout]    |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_drv_paths`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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 19.98s
[INFO] running `Command { std: "docker" "inspect" "c8ddbdbb82065ab469dca4675bb9c9783fabd77fa1100d12a55b83fb007337d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8ddbdbb82065ab469dca4675bb9c9783fabd77fa1100d12a55b83fb007337d3", kill_on_drop: false }`
[INFO] [stdout] c8ddbdbb82065ab469dca4675bb9c9783fabd77fa1100d12a55b83fb007337d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14f99bd2f4c1d8ba13adf4be21a4135e13245a991e136283f2ed207f5b2c7558
[INFO] running `Command { std: "docker" "start" "-a" "14f99bd2f4c1d8ba13adf4be21a4135e13245a991e136283f2ed207f5b2c7558", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix-rebuild-stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `drv_paths`
[INFO] [stdout]   --> src/main.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn build_dep_tree(drv_paths: Vec<String>) -> HashMap<String, Vec<String>> {
[INFO] [stdout]    |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_drv_paths`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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 0.83s
[INFO] running `Command { std: "docker" "inspect" "14f99bd2f4c1d8ba13adf4be21a4135e13245a991e136283f2ed207f5b2c7558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f99bd2f4c1d8ba13adf4be21a4135e13245a991e136283f2ed207f5b2c7558", kill_on_drop: false }`
[INFO] [stdout] 14f99bd2f4c1d8ba13adf4be21a4135e13245a991e136283f2ed207f5b2c7558
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7f2c04fe1bffa28e7cebe9a6cb14a3aa90d94f7dcfd435be89fb666e13d4dde0
[INFO] running `Command { std: "docker" "start" "-a" "7f2c04fe1bffa28e7cebe9a6cb14a3aa90d94f7dcfd435be89fb666e13d4dde0", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `drv_paths`
[INFO] [stderr]   --> src/main.rs:40:19
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn build_dep_tree(drv_paths: Vec<String>) -> HashMap<String, Vec<String>> {
[INFO] [stderr]    |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_drv_paths`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `nix-rebuild-stats` (bin "nix-rebuild-stats" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nix_rebuild_stats-79aa977b5a019a3b)
[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" "7f2c04fe1bffa28e7cebe9a6cb14a3aa90d94f7dcfd435be89fb666e13d4dde0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f2c04fe1bffa28e7cebe9a6cb14a3aa90d94f7dcfd435be89fb666e13d4dde0", kill_on_drop: false }`
[INFO] [stdout] 7f2c04fe1bffa28e7cebe9a6cb14a3aa90d94f7dcfd435be89fb666e13d4dde0