[INFO] cloning repository oblivia-simplex/roper2
[INFO] running `"git" "clone" "--bare" "git://github.com/oblivia-simplex/roper2.git" "work/cache/sources/gh/oblivia-simplex/roper2"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/oblivia-simplex/roper2'...
[INFO] running `"git" "clone" "work/cache/sources/gh/oblivia-simplex/roper2" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/oblivia-simplex/roper2"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/oblivia-simplex/roper2'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/oblivia-simplex/roper2" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/oblivia-simplex/roper2"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/oblivia-simplex/roper2'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 51ef8db002c8200a92ab376411fbf6749ec63591
[INFO] sha for GitHub repo oblivia-simplex/roper2: 51ef8db002c8200a92ab376411fbf6749ec63591
[INFO] validating manifest of oblivia-simplex/roper2 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of oblivia-simplex/roper2 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing oblivia-simplex/roper2
[INFO] finished frobbing oblivia-simplex/roper2
[INFO] frobbed toml for oblivia-simplex/roper2 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/oblivia-simplex/roper2/Cargo.toml
[INFO] started frobbing oblivia-simplex/roper2
[INFO] finished frobbing oblivia-simplex/roper2
[INFO] frobbed toml for oblivia-simplex/roper2 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/oblivia-simplex/roper2/Cargo.toml
[INFO] crate oblivia-simplex/roper2 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Updating git repository `https://github.com/ekse/unicorn-rs`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded evmap v4.0.0
[INFO] [stderr]   Downloaded capstone v0.3.1
[INFO] [stderr]   Downloaded capstone-sys v0.7.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking oblivia-simplex/roper2 against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/oblivia-simplex/roper2:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 821d1d4aeb4037411783e96b6d722612a350c10ee74a91b22ad199479b4dc817
[INFO] running `"docker" "start" "-a" "821d1d4aeb4037411783e96b6d722612a350c10ee74a91b22ad199479b4dc817"`
[INFO] [stderr]    Compiling capstone-sys v0.7.0
[INFO] [stderr]     Checking rand_core v0.1.0
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]    Compiling roper2 v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking rust-ini v0.11.0
[INFO] [stderr]     Checking evmap v4.0.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]     Checking rand v0.5.0-pre.1
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]    Compiling scroll_derive v0.8.0
[INFO] [stderr]     Checking chan v0.1.21
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling build-helper v0.1.1
[INFO] [stderr]     Checking hexdump v0.1.0
[INFO] [stderr]     Checking chan-signal v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]     Checking scroll v0.8.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking goblin v0.0.14
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]    Compiling os_type v0.6.0
[INFO] [stderr]    Compiling libunicorn-sys v0.8.0 (https://github.com/ekse/unicorn-rs#5767fb3f)
[INFO] [stderr]     Checking capstone v0.3.1
[INFO] [stderr]     Checking unicorn v0.8.0 (https://github.com/ekse/unicorn-rs#5767fb3f)
[INFO] [stderr] error[E0425]: cannot find function `thread_rng` in this scope
[INFO] [stderr]    --> src/emu/loader.rs:874:23
[INFO] [stderr]     |
[INFO] [stderr] 874 |         let mut rng = thread_rng();
[INFO] [stderr]     |                       ^^^^^^^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 6   | use par::statics::rand::thread_rng;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `thread_rng` in this scope
[INFO] [stderr]    --> src/emu/loader.rs:893:23
[INFO] [stderr]     |
[INFO] [stderr] 893 |         let mut rng = thread_rng();
[INFO] [stderr]     |                       ^^^^^^^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 6   | use par::statics::rand::thread_rng;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/emu/loader.rs:436:13
[INFO] [stderr]     |
[INFO] [stderr] 436 |         let mut data_ptr = data.as_mut_ptr();
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/emu/loader.rs:448:13
[INFO] [stderr]     |
[INFO] [stderr] 448 |         let mut data = emu.mem_read(begin, size).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/emu/loader.rs:449:13
[INFO] [stderr]     |
[INFO] [stderr] 449 |         let mut ptr = data;
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `roper2`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/gen/genotype.rs:231:21
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 let mut gad = Gadget {
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/fit/evaluator.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |             let mut creature: Creature = creature;
[INFO] [stderr]    |                 ----^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "821d1d4aeb4037411783e96b6d722612a350c10ee74a91b22ad199479b4dc817"`
[INFO] running `"docker" "rm" "-f" "821d1d4aeb4037411783e96b6d722612a350c10ee74a91b22ad199479b4dc817"`
[INFO] [stdout] 821d1d4aeb4037411783e96b6d722612a350c10ee74a91b22ad199479b4dc817