[INFO] updating cached repository https://github.com/brunoshiroma/benchtool-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e262e947aa22e766633bd9b1f0f9e798b223bf3
[INFO] testing brunoshiroma/benchtool-rust against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunoshiroma%2Fbenchtool-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brunoshiroma/benchtool-rust on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brunoshiroma/benchtool-rust
[INFO] finished tweaking git repo https://github.com/brunoshiroma/benchtool-rust
[INFO] tweaked toml for git repo https://github.com/brunoshiroma/benchtool-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/brunoshiroma/benchtool-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 72d6fed2e45034a2ab039f6b582f163b1f96e20343a3ea3fbe8c3ff0bf184a89
[INFO] running `Command { std: "docker" "start" "-a" "72d6fed2e45034a2ab039f6b582f163b1f96e20343a3ea3fbe8c3ff0bf184a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72d6fed2e45034a2ab039f6b582f163b1f96e20343a3ea3fbe8c3ff0bf184a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72d6fed2e45034a2ab039f6b582f163b1f96e20343a3ea3fbe8c3ff0bf184a89", kill_on_drop: false }`
[INFO] [stdout] 72d6fed2e45034a2ab039f6b582f163b1f96e20343a3ea3fbe8c3ff0bf184a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 814277208de9f11fc18d9e7e45a6753a0f6ce4014fc1a55ad1ccd9a8bc169f23
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "814277208de9f11fc18d9e7e45a6753a0f6ce4014fc1a55ad1ccd9a8bc169f23", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling benchtool-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value captured by `result` is never read
[INFO] [stdout]   --> src/simple_fibonacci_recursive_bench.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         result = calculate_fibonacci(Zero::zero(), One::one(), count, &mut 1);
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.10s
[INFO] running `Command { std: "docker" "inspect" "814277208de9f11fc18d9e7e45a6753a0f6ce4014fc1a55ad1ccd9a8bc169f23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "814277208de9f11fc18d9e7e45a6753a0f6ce4014fc1a55ad1ccd9a8bc169f23", kill_on_drop: false }`
[INFO] [stdout] 814277208de9f11fc18d9e7e45a6753a0f6ce4014fc1a55ad1ccd9a8bc169f23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c29e55ab62949ae0fe82bf0e819686cd00e6977b09df1a4d5ccd6dedec409ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1c29e55ab62949ae0fe82bf0e819686cd00e6977b09df1a4d5ccd6dedec409ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling benchtool-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value captured by `result` is never read
[INFO] [stdout]   --> src/simple_fibonacci_recursive_bench.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         result = calculate_fibonacci(Zero::zero(), One::one(), count, &mut 1);
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.62s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1c29e55ab62949ae0fe82bf0e819686cd00e6977b09df1a4d5ccd6dedec409ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c29e55ab62949ae0fe82bf0e819686cd00e6977b09df1a4d5ccd6dedec409ff", kill_on_drop: false }`
[INFO] [stdout] 1c29e55ab62949ae0fe82bf0e819686cd00e6977b09df1a4d5ccd6dedec409ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b11c4dae106765e03320c1591423d22da48628c3789cd80fefa6f85f11aa591f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b11c4dae106765e03320c1591423d22da48628c3789cd80fefa6f85f11aa591f", kill_on_drop: false }`
[INFO] [stderr] warning: value captured by `result` is never read
[INFO] [stderr]   --> src/simple_fibonacci_recursive_bench.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         result = calculate_fibonacci(Zero::zero(), One::one(), count, &mut 1);
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: did you mean to capture by reference instead?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/benchtool_rust-950d501d9e2f596d
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b11c4dae106765e03320c1591423d22da48628c3789cd80fefa6f85f11aa591f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b11c4dae106765e03320c1591423d22da48628c3789cd80fefa6f85f11aa591f", kill_on_drop: false }`
[INFO] [stdout] b11c4dae106765e03320c1591423d22da48628c3789cd80fefa6f85f11aa591f