[INFO] updating cached repository Torrencem/dynamics-search
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Torrencem/dynamics-search
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Torrencem/dynamics-search" "work/ex/beta-1.38-1/sources/1.37.0/gh/Torrencem/dynamics-search"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Torrencem/dynamics-search'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Torrencem/dynamics-search" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Torrencem/dynamics-search"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Torrencem/dynamics-search'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7511fcc5e1c20231e996e5f153aa0e0394bea5f
[INFO] sha for GitHub repo Torrencem/dynamics-search: b7511fcc5e1c20231e996e5f153aa0e0394bea5f
[INFO] validating manifest of Torrencem/dynamics-search 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 Torrencem/dynamics-search 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 Torrencem/dynamics-search
[INFO] finished frobbing Torrencem/dynamics-search
[INFO] frobbed toml for Torrencem/dynamics-search written to work/ex/beta-1.38-1/sources/1.37.0/gh/Torrencem/dynamics-search/Cargo.toml
[INFO] started frobbing Torrencem/dynamics-search
[INFO] finished frobbing Torrencem/dynamics-search
[INFO] frobbed toml for Torrencem/dynamics-search written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Torrencem/dynamics-search/Cargo.toml
[INFO] crate Torrencem/dynamics-search 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Torrencem/dynamics-search against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Torrencem/dynamics-search:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 0b3a2cedfa86c34e7797780df6ff7482fd2a53b211000cb4d7096b4ed0177f72
[INFO] running `"docker" "start" "-a" "0b3a2cedfa86c34e7797780df6ff7482fd2a53b211000cb4d7096b4ed0177f72"`
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling rayon v1.1.0
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling computing_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(euclidean_division, test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BTreeMap`
[INFO] [stderr]  --> src/ds_helper.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::{HashSet, BTreeMap};
[INFO] [stderr]   |                                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `arrayvec::ArrayVec`
[INFO] [stderr]  --> src/ds_helper.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use arrayvec::ArrayVec;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `math::*`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use math::*;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `computing_project`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0b3a2cedfa86c34e7797780df6ff7482fd2a53b211000cb4d7096b4ed0177f72"`
[INFO] running `"docker" "rm" "-f" "0b3a2cedfa86c34e7797780df6ff7482fd2a53b211000cb4d7096b4ed0177f72"`
[INFO] [stdout] 0b3a2cedfa86c34e7797780df6ff7482fd2a53b211000cb4d7096b4ed0177f72