[INFO] cloning repository https://github.com/firefox7025/ImageSorter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/firefox7025/ImageSorter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirefox7025%2FImageSorter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirefox7025%2FImageSorter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d551cd493613fd0acedda144da83bb53127af8e9
[INFO] checking firefox7025/ImageSorter against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirefox7025%2FImageSorter" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/firefox7025/ImageSorter on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/firefox7025/ImageSorter
[INFO] finished tweaking git repo https://github.com/firefox7025/ImageSorter
[INFO] tweaked toml for git repo https://github.com/firefox7025/ImageSorter written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/firefox7025/ImageSorter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5d783539d7a7532a41ac668b8a2a71757fc167454e6cb4e5e54b39267be529b
[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" "e5d783539d7a7532a41ac668b8a2a71757fc167454e6cb4e5e54b39267be529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5d783539d7a7532a41ac668b8a2a71757fc167454e6cb4e5e54b39267be529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d783539d7a7532a41ac668b8a2a71757fc167454e6cb4e5e54b39267be529b", kill_on_drop: false }`
[INFO] [stdout] e5d783539d7a7532a41ac668b8a2a71757fc167454e6cb4e5e54b39267be529b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85c6c19d1a4824367e2fd534cd239ac3c26da8579588643547a49a3c61a554b7
[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" "85c6c19d1a4824367e2fd534cd239ac3c26da8579588643547a49a3c61a554b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking termcolor v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking inflate v0.4.3
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]    Compiling quote v0.6.5
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling syn v0.14.7
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking env_logger v0.5.12
[INFO] [stderr]     Checking pretty_env_logger v0.2.4
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking img_hash v2.1.0
[INFO] [stderr]     Checking image_sorter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:109:27
[INFO] [stdout]     |
[INFO] [stdout] 109 |             .min_by_key(|(x, y)| hashimages::image_diff(val, y)).unwrap();
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dist_ratio`
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let dist_ratio = matches.value_of("Similarity").unwrap_or("20");
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dist_ratio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `output_directory` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let output_directory;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_output_directory` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output_directory` is never read
[INFO] [stdout]   --> src/main.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             output_directory = path;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:109:27
[INFO] [stdout]     |
[INFO] [stdout] 109 |             .min_by_key(|(x, y)| hashimages::image_diff(val, y)).unwrap();
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dist_ratio`
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let dist_ratio = matches.value_of("Similarity").unwrap_or("20");
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dist_ratio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `output_directory` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let output_directory;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_output_directory` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output_directory` is never read
[INFO] [stdout]   --> src/main.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             output_directory = path;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.28s
[INFO] running `Command { std: "docker" "inspect" "85c6c19d1a4824367e2fd534cd239ac3c26da8579588643547a49a3c61a554b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85c6c19d1a4824367e2fd534cd239ac3c26da8579588643547a49a3c61a554b7", kill_on_drop: false }`
[INFO] [stdout] 85c6c19d1a4824367e2fd534cd239ac3c26da8579588643547a49a3c61a554b7