[INFO] updating cached repository xleyba/calculator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] warning: no common commits
[INFO] [stderr] From git://github.com/xleyba/calculator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/xleyba/calculator" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/xleyba/calculator"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/xleyba/calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/xleyba/calculator" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/xleyba/calculator"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/xleyba/calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2c3de721b77489127d044da55d44e9e843cbaf0b
[INFO] sha for GitHub repo xleyba/calculator: 2c3de721b77489127d044da55d44e9e843cbaf0b
[INFO] validating manifest of xleyba/calculator on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of xleyba/calculator on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing xleyba/calculator
[INFO] finished frobbing xleyba/calculator
[INFO] frobbed toml for xleyba/calculator written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/xleyba/calculator/Cargo.toml
[INFO] started frobbing xleyba/calculator
[INFO] finished frobbing xleyba/calculator
[INFO] frobbed toml for xleyba/calculator written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/xleyba/calculator/Cargo.toml
[INFO] crate xleyba/calculator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking xleyba/calculator against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-2/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/xleyba/calculator:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8d063e2a294b01a9f4e225b268a592c8b4da56e8bd07c034674d4173b3bd86c4
[INFO] running `"docker" "start" "-a" "8d063e2a294b01a9f4e225b268a592c8b4da56e8bd07c034674d4173b3bd86c4"`
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking arc-swap v0.3.9
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking version_check v0.1.5
[INFO] [stderr]    Compiling rug v1.3.0
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr]     Checking colored v1.7.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling v_escape v0.7.2
[INFO] [stderr]    Compiling unicase v2.3.0
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling actix-web v0.7.19
[INFO] [stderr]     Checking tokio-sync v0.1.4
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking tokio-executor v0.1.7
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking signal-hook v0.1.8
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.12
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.13
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking tokio v0.1.18
[INFO] [stderr]     Checking h2 v0.1.17
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling v_escape_derive v0.5.3
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling v_htmlescape v0.4.3
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking actix-net v0.2.6
[INFO] [stderr]     Checking calculator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Assign`
[INFO] [stderr]  --> src/main.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rug::{Assign, Integer};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Assign`
[INFO] [stderr]  --> src/main.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rug::{Assign, Integer};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6m 19s
[INFO] running `"docker" "inspect" "8d063e2a294b01a9f4e225b268a592c8b4da56e8bd07c034674d4173b3bd86c4"`
[INFO] running `"docker" "rm" "-f" "8d063e2a294b01a9f4e225b268a592c8b4da56e8bd07c034674d4173b3bd86c4"`
[INFO] [stdout] 8d063e2a294b01a9f4e225b268a592c8b4da56e8bd07c034674d4173b3bd86c4