[INFO] updating cached repository duvholt/rust-metaheuristic-framework
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/duvholt/rust-metaheuristic-framework
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/duvholt/rust-metaheuristic-framework" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/duvholt/rust-metaheuristic-framework"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/duvholt/rust-metaheuristic-framework'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/duvholt/rust-metaheuristic-framework" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/duvholt/rust-metaheuristic-framework"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/duvholt/rust-metaheuristic-framework'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 11c125e2a2840aed9b61b2f40b7bc406ec9970f2
[INFO] sha for GitHub repo duvholt/rust-metaheuristic-framework: 11c125e2a2840aed9b61b2f40b7bc406ec9970f2
[INFO] validating manifest of duvholt/rust-metaheuristic-framework on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of duvholt/rust-metaheuristic-framework on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing duvholt/rust-metaheuristic-framework
[INFO] finished frobbing duvholt/rust-metaheuristic-framework
[INFO] frobbed toml for duvholt/rust-metaheuristic-framework written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/duvholt/rust-metaheuristic-framework/Cargo.toml
[INFO] started frobbing duvholt/rust-metaheuristic-framework
[INFO] finished frobbing duvholt/rust-metaheuristic-framework
[INFO] frobbed toml for duvholt/rust-metaheuristic-framework written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/duvholt/rust-metaheuristic-framework/Cargo.toml
[INFO] crate duvholt/rust-metaheuristic-framework already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking duvholt/rust-metaheuristic-framework against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-0/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/duvholt/rust-metaheuristic-framework:/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=forbid" "-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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 614f009fafe2ba7c17de52e270c0c125341fc8a71065d691b8a814c0a443f4a5
[INFO] running `"docker" "start" "-a" "614f009fafe2ba7c17de52e270c0c125341fc8a71065d691b8a814c0a443f4a5"`
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking statistical v0.1.1
[INFO] [stderr]     Checking rustoa v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/testing/utils.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     use serde_json;
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/lib.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | extern crate serde_json;
[INFO] [stderr]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.39s
[INFO] running `"docker" "inspect" "614f009fafe2ba7c17de52e270c0c125341fc8a71065d691b8a814c0a443f4a5"`
[INFO] running `"docker" "rm" "-f" "614f009fafe2ba7c17de52e270c0c125341fc8a71065d691b8a814c0a443f4a5"`
[INFO] [stdout] 614f009fafe2ba7c17de52e270c0c125341fc8a71065d691b8a814c0a443f4a5