[INFO] cloning repository https://github.com/Idolf/rust-str-fuzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Idolf/rust-str-fuzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Frust-str-fuzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Frust-str-fuzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 630311fdcdc1320f7d1aa06dcf9175029c4233f1
[INFO] testing Idolf/rust-str-fuzz against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Frust-str-fuzz" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Idolf/rust-str-fuzz on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Idolf/rust-str-fuzz
[INFO] finished tweaking git repo https://github.com/Idolf/rust-str-fuzz
[INFO] tweaked toml for git repo https://github.com/Idolf/rust-str-fuzz written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Idolf/rust-str-fuzz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 2f2a98cb19f75572903575048a7385a92e0575e22a6992d38760c96ea03982ca
[INFO] running `Command { std: "docker" "start" "-a" "2f2a98cb19f75572903575048a7385a92e0575e22a6992d38760c96ea03982ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f2a98cb19f75572903575048a7385a92e0575e22a6992d38760c96ea03982ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f2a98cb19f75572903575048a7385a92e0575e22a6992d38760c96ea03982ca", kill_on_drop: false }`
[INFO] [stdout] 2f2a98cb19f75572903575048a7385a92e0575e22a6992d38760c96ea03982ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce4babba3e53177cb3be76a6cb69d442f57aa72b04052a7b34913f108d15d4be
[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" "ce4babba3e53177cb3be76a6cb69d442f57aa72b04052a7b34913f108d15d4be", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling tokio-executor v0.1.2 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-io v0.1.6 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling tokio-threadpool v0.1.3 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-timer v0.2.3 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-reactor v0.1.1 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-fs v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-udp v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-tcp v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio v0.1.6 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling foo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut threadpool = threadpool_builder.build();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 6.01s
[INFO] running `Command { std: "docker" "inspect" "ce4babba3e53177cb3be76a6cb69d442f57aa72b04052a7b34913f108d15d4be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce4babba3e53177cb3be76a6cb69d442f57aa72b04052a7b34913f108d15d4be", kill_on_drop: false }`
[INFO] [stdout] ce4babba3e53177cb3be76a6cb69d442f57aa72b04052a7b34913f108d15d4be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe6138a9b6b1813a7e1ef262c609ddd3cbed0ac59d24190ee9ad0a67f052a64f
[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" "fe6138a9b6b1813a7e1ef262c609ddd3cbed0ac59d24190ee9ad0a67f052a64f", kill_on_drop: false }`
[INFO] [stderr]    Compiling foo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut threadpool = threadpool_builder.build();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 0.97s
[INFO] running `Command { std: "docker" "inspect" "fe6138a9b6b1813a7e1ef262c609ddd3cbed0ac59d24190ee9ad0a67f052a64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6138a9b6b1813a7e1ef262c609ddd3cbed0ac59d24190ee9ad0a67f052a64f", kill_on_drop: false }`
[INFO] [stdout] fe6138a9b6b1813a7e1ef262c609ddd3cbed0ac59d24190ee9ad0a67f052a64f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2b3760e3e05f5e8ba69f730afea11c31c597f7936da0ae3ef03b359ac4c4b720
[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" "2b3760e3e05f5e8ba69f730afea11c31c597f7936da0ae3ef03b359ac4c4b720", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut threadpool = threadpool_builder.build();
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/foo-4141e6a20e98b79e
[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" "2b3760e3e05f5e8ba69f730afea11c31c597f7936da0ae3ef03b359ac4c4b720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b3760e3e05f5e8ba69f730afea11c31c597f7936da0ae3ef03b359ac4c4b720", kill_on_drop: false }`
[INFO] [stdout] 2b3760e3e05f5e8ba69f730afea11c31c597f7936da0ae3ef03b359ac4c4b720
