[INFO] updating cached 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" "-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] 630311fdcdc1320f7d1aa06dcf9175029c4233f1
[INFO] testing Idolf/rust-str-fuzz 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%2FIdolf%2Frust-str-fuzz" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Idolf/rust-str-fuzz 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/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-11/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-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] 7dc97ddf7b46f90cbf8956b80ad18cc167b81c2b64fa9ba4237353058ac10740
[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" "7dc97ddf7b46f90cbf8956b80ad18cc167b81c2b64fa9ba4237353058ac10740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7dc97ddf7b46f90cbf8956b80ad18cc167b81c2b64fa9ba4237353058ac10740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dc97ddf7b46f90cbf8956b80ad18cc167b81c2b64fa9ba4237353058ac10740", kill_on_drop: false }`
[INFO] [stdout] 7dc97ddf7b46f90cbf8956b80ad18cc167b81c2b64fa9ba4237353058ac10740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 7752c2ca95feac3aea356576a07b12f2ca27fd2dc3822ebf87758bfa9a22d0c4
[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" "7752c2ca95feac3aea356576a07b12f2ca27fd2dc3822ebf87758bfa9a22d0c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling bytes v0.4.7
[INFO] [stderr]    Compiling mio v0.6.14
[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 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-tcp 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-fs 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 17.79s
[INFO] running `Command { std: "docker" "inspect" "7752c2ca95feac3aea356576a07b12f2ca27fd2dc3822ebf87758bfa9a22d0c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7752c2ca95feac3aea356576a07b12f2ca27fd2dc3822ebf87758bfa9a22d0c4", kill_on_drop: false }`
[INFO] [stdout] 7752c2ca95feac3aea356576a07b12f2ca27fd2dc3822ebf87758bfa9a22d0c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b95826d00fe262243497ff89024331f7498b3503d86c5c773d112183ad69d4b4
[INFO] running `Command { std: "docker" "start" "-a" "b95826d00fe262243497ff89024331f7498b3503d86c5c773d112183ad69d4b4", 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 0.76s
[INFO] running `Command { std: "docker" "inspect" "b95826d00fe262243497ff89024331f7498b3503d86c5c773d112183ad69d4b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b95826d00fe262243497ff89024331f7498b3503d86c5c773d112183ad69d4b4", kill_on_drop: false }`
[INFO] [stdout] b95826d00fe262243497ff89024331f7498b3503d86c5c773d112183ad69d4b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 6674d3fc5a0eb86e798505a67d0e1744fb9806a4b17e60872b358bb52778ae54
[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" "6674d3fc5a0eb86e798505a67d0e1744fb9806a4b17e60872b358bb52778ae54", 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 0.18s
[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" "6674d3fc5a0eb86e798505a67d0e1744fb9806a4b17e60872b358bb52778ae54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6674d3fc5a0eb86e798505a67d0e1744fb9806a4b17e60872b358bb52778ae54", kill_on_drop: false }`
[INFO] [stdout] 6674d3fc5a0eb86e798505a67d0e1744fb9806a4b17e60872b358bb52778ae54