[INFO] cloning repository https://github.com/bjrnt/fractals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bjrnt/fractals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjrnt%2Ffractals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjrnt%2Ffractals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f1752cd122c5ecdbc385d6920442e8331098071
[INFO] checking bjrnt/fractals against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjrnt%2Ffractals" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bjrnt/fractals on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bjrnt/fractals
[INFO] finished tweaking git repo https://github.com/bjrnt/fractals
[INFO] tweaked toml for git repo https://github.com/bjrnt/fractals written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bjrnt/fractals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded semver v0.2.3
[INFO] [stderr]   Downloaded syn v0.11.4
[INFO] [stderr]   Downloaded quote v0.3.12
[INFO] [stderr]   Downloaded clippy v0.0.114
[INFO] [stderr]   Downloaded clippy_lints v0.0.114
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.11
[INFO] [stderr]   Downloaded rustc-serialize v0.3.22
[INFO] [stderr]   Downloaded serde_json v0.9.5
[INFO] [stderr]   Downloaded nom v1.2.4
[INFO] [stderr]   Downloaded serde_codegen_internals v0.13.0
[INFO] [stderr]   Downloaded image v0.12.2
[INFO] [stderr]   Downloaded serde v0.9.7
[INFO] [stderr]   Downloaded serde_derive v0.9.7
[INFO] [stderr]   Downloaded adler32 v0.3.0
[INFO] [stderr]   Downloaded deflate v0.7.4
[INFO] [stderr]   Downloaded cargo_metadata v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fbc96da8759def563d542e12a1c8e9f5a5361ff1548a11558fc2cf786b3456b
[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" "2fbc96da8759def563d542e12a1c8e9f5a5361ff1548a11558fc2cf786b3456b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fbc96da8759def563d542e12a1c8e9f5a5361ff1548a11558fc2cf786b3456b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fbc96da8759def563d542e12a1c8e9f5a5361ff1548a11558fc2cf786b3456b", kill_on_drop: false }`
[INFO] [stdout] 2fbc96da8759def563d542e12a1c8e9f5a5361ff1548a11558fc2cf786b3456b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--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] fe230e9f797465435376abf89494c0d53a8a43189c5d30c7b65b5ec8e6fb3c7a
[INFO] running `Command { std: "docker" "start" "-a" "fe230e9f797465435376abf89494c0d53a8a43189c5d30c7b65b5ec8e6fb3c7a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking adler32 v0.3.0
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.7
[INFO] [stderr]     Checking deflate v0.7.4
[INFO] [stderr]     Checking gif v0.9.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking rayon v0.6.0
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.11
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]     Checking num-complex v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking image v0.12.2
[INFO] [stderr]     Checking fractals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Linear`
[INFO] [stdout]   --> src/animation.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Linear,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `easing`
[INFO] [stdout]   --> src/animation.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     easing: Easing
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Linear`
[INFO] [stdout]   --> src/animation.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Linear,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `easing`
[INFO] [stdout]   --> src/animation.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     easing: Easing
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.70s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fe230e9f797465435376abf89494c0d53a8a43189c5d30c7b65b5ec8e6fb3c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe230e9f797465435376abf89494c0d53a8a43189c5d30c7b65b5ec8e6fb3c7a", kill_on_drop: false }`
[INFO] [stdout] fe230e9f797465435376abf89494c0d53a8a43189c5d30c7b65b5ec8e6fb3c7a