[INFO] updating cached repository Emmatipate/duck-duck-swim
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Emmatipate/duck-duck-swim
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Emmatipate/duck-duck-swim" "work/ex/beta-1.38-1/sources/1.37.0/gh/Emmatipate/duck-duck-swim"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Emmatipate/duck-duck-swim'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Emmatipate/duck-duck-swim" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Emmatipate/duck-duck-swim"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Emmatipate/duck-duck-swim'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3b1431472f942b9d10dec0bc38c3e66fcedb88dd
[INFO] sha for GitHub repo Emmatipate/duck-duck-swim: 3b1431472f942b9d10dec0bc38c3e66fcedb88dd
[INFO] validating manifest of Emmatipate/duck-duck-swim on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Emmatipate/duck-duck-swim on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Emmatipate/duck-duck-swim
[INFO] finished frobbing Emmatipate/duck-duck-swim
[INFO] frobbed toml for Emmatipate/duck-duck-swim written to work/ex/beta-1.38-1/sources/1.37.0/gh/Emmatipate/duck-duck-swim/Cargo.toml
[INFO] started frobbing Emmatipate/duck-duck-swim
[INFO] finished frobbing Emmatipate/duck-duck-swim
[INFO] frobbed toml for Emmatipate/duck-duck-swim written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Emmatipate/duck-duck-swim/Cargo.toml
[INFO] crate Emmatipate/duck-duck-swim already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Emmatipate/duck-duck-swim against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Emmatipate/duck-duck-swim:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 39104d5f00f74bea1590fffb3ed4c61f853f903ca37f3e9cce591087e68af7b2
[INFO] running `"docker" "start" "-a" "39104d5f00f74bea1590fffb3ed4c61f853f903ca37f3e9cce591087e68af7b2"`
[INFO] [stderr]    Compiling libc v0.2.18
[INFO] [stderr]    Compiling phf_shared v0.7.20
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling serde v0.8.20
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling khronos_api v1.0.0
[INFO] [stderr]    Compiling gcc v0.3.40
[INFO] [stderr]    Compiling lazy_static v0.1.16
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling bitflags v0.6.0
[INFO] [stderr]    Compiling atom v0.3.4
[INFO] [stderr]    Compiling threadpool v1.3.2
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling scoped_threadpool v0.1.7
[INFO] [stderr]    Compiling xml-rs v0.3.5
[INFO] [stderr]    Compiling phf v0.7.20
[INFO] [stderr]    Compiling x11-dl v2.11.0
[INFO] [stderr]    Compiling draw_state v0.6.0
[INFO] [stderr]    Compiling gif v0.9.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling num_cpus v1.2.0
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling gfx_core v0.4.0
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling time v0.1.35
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.2
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling deque v0.3.1
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling pulse v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling phf_codegen v0.7.20
[INFO] [stderr]    Compiling rayon v0.6.0
[INFO] [stderr]    Compiling wayland-client v0.5.12
[INFO] [stderr]    Compiling flate2 v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.1.35
[INFO] [stderr]    Compiling num-complex v0.1.35
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling specs v0.7.0
[INFO] [stderr]    Compiling gfx_gl v0.3.1
[INFO] [stderr]    Compiling glutin v0.6.2
[INFO] [stderr]    Compiling png v0.5.2
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling jpeg-decoder v0.1.10
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling enum_primitive v0.1.0
[INFO] [stderr]    Compiling nalgebra v0.9.0
[INFO] [stderr]    Compiling image v0.10.4
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling libloading v0.3.1
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.5.11
[INFO] [stderr]    Compiling gfx_device_gl v0.11.2
[INFO] [stderr]    Compiling gfx v0.12.2
[INFO] [stderr]    Compiling wayland-kbd v0.3.6
[INFO] [stderr]    Compiling wayland-window v0.2.3
[INFO] [stderr]    Compiling pegasus v0.2.0
[INFO] [stderr]    Compiling gfx_window_glutin v0.12.0
[INFO] [stderr]    Compiling duck_duck_swim v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let mut w = plan.mut_world();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2m 10s
[INFO] running `"docker" "inspect" "39104d5f00f74bea1590fffb3ed4c61f853f903ca37f3e9cce591087e68af7b2"`
[INFO] running `"docker" "rm" "-f" "39104d5f00f74bea1590fffb3ed4c61f853f903ca37f3e9cce591087e68af7b2"`
[INFO] [stdout] 39104d5f00f74bea1590fffb3ed4c61f853f903ca37f3e9cce591087e68af7b2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Emmatipate/duck-duck-swim:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5f30215672083fb6c761168c5d9860fca65d33b3763b778b667e91282834393e
[INFO] running `"docker" "start" "-a" "5f30215672083fb6c761168c5d9860fca65d33b3763b778b667e91282834393e"`
[INFO] [stderr]    Compiling duck_duck_swim v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let mut w = plan.mut_world();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `"docker" "inspect" "5f30215672083fb6c761168c5d9860fca65d33b3763b778b667e91282834393e"`
[INFO] running `"docker" "rm" "-f" "5f30215672083fb6c761168c5d9860fca65d33b3763b778b667e91282834393e"`
[INFO] [stdout] 5f30215672083fb6c761168c5d9860fca65d33b3763b778b667e91282834393e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Emmatipate/duck-duck-swim:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 9b0ac81570eec37451cc390489dd586ed2c59909d1a171c186030406a6e63063
[INFO] running `"docker" "start" "-a" "9b0ac81570eec37451cc390489dd586ed2c59909d1a171c186030406a6e63063"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/duck_duck_swim-394ebad4e34a3dc4
[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 `"docker" "inspect" "9b0ac81570eec37451cc390489dd586ed2c59909d1a171c186030406a6e63063"`
[INFO] running `"docker" "rm" "-f" "9b0ac81570eec37451cc390489dd586ed2c59909d1a171c186030406a6e63063"`
[INFO] [stdout] 9b0ac81570eec37451cc390489dd586ed2c59909d1a171c186030406a6e63063