[INFO] updating cached repository emallson/tiptop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/emallson/tiptop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/emallson/tiptop" "work/ex/beta-1.38-1/sources/1.37.0/gh/emallson/tiptop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/emallson/tiptop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/emallson/tiptop" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/emallson/tiptop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/emallson/tiptop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7f7677b96f1a1ec19889d1e1000b8aab047d265
[INFO] sha for GitHub repo emallson/tiptop: b7f7677b96f1a1ec19889d1e1000b8aab047d265
[INFO] validating manifest of emallson/tiptop 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 emallson/tiptop 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 emallson/tiptop
[INFO] finished frobbing emallson/tiptop
[INFO] frobbed toml for emallson/tiptop written to work/ex/beta-1.38-1/sources/1.37.0/gh/emallson/tiptop/Cargo.toml
[INFO] started frobbing emallson/tiptop
[INFO] finished frobbing emallson/tiptop
[INFO] frobbed toml for emallson/tiptop written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/emallson/tiptop/Cargo.toml
[INFO] crate emallson/tiptop 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing emallson/tiptop 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-4/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/emallson/tiptop:/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] a8f6ebe0015da0c27581242a9572f7d38223c10a474580920586a0209f1b01b7
[INFO] running `"docker" "start" "-a" "a8f6ebe0015da0c27581242a9572f7d38223c10a474580920586a0209f1b01b7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling fixedbitset v0.1.8
[INFO] [stderr]    Compiling ordermap v0.2.12
[INFO] [stderr]    Compiling slog v1.7.1
[INFO] [stderr]    Compiling futures v0.1.16
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling fnv v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling serde v1.0.15
[INFO] [stderr]    Compiling as_num v0.2.3
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling capnp v0.7.5
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling colored v1.5.2
[INFO] [stderr] warning[E0502]: cannot borrow `*reff` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/capnp-0.7.5/src/private/layout.rs:643:47
[INFO] [stderr]     |
[INFO] [stderr] 643 |         let ptr = try!(follow_fars(&mut reff, (*reff).target(), &mut segment));
[INFO] [stderr]     |                        ----------- ---------  ^^^^^^^ immutable borrow occurs here
[INFO] [stderr]     |                        |           |
[INFO] [stderr]     |                        |           mutable borrow occurs here
[INFO] [stderr]     |                        mutable borrow later used by call
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling isatty v0.1.3
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling gurobi v0.1.1 (https://github.com/emallson/gurobi.rs.git#e275cfae)
[INFO] [stderr]    Compiling slog-serde v1.0.0-alpha9
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling capnpc v0.7.5
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling statrs v0.8.0
[INFO] [stderr]    Compiling rand-mersenne-twister v0.2.0 (https://github.com/emallson/rust-mersenne-twister.git#2e01e0ee)
[INFO] [stderr]    Compiling serde_json v1.0.3
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling slog-extra v0.1.2
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling slog-stream v1.2.1
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling slog-term v1.5.0
[INFO] [stderr]    Compiling slog-json v1.2.1
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling docopt v0.6.86
[INFO] [stderr]    Compiling quickcheck v0.4.1
[INFO] [stderr]    Compiling petgraph v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.15
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]    Compiling vec-graph v0.1.0 (https://github.com/emallson/vec-graph.git#965dc3b9)
[INFO] [stderr]    Compiling capngraph v0.3.0 (https://github.com/emallson/capngraph.git#997b39ef)
[INFO] [stderr]    Compiling ris v0.1.0 (https://github.com/emallson/ris.rs.git#95d094fa)
[INFO] [stderr]    Compiling docopt v0.8.1
[INFO] [stderr]    Compiling tiptop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `EdgeIndex`
[INFO] [stderr]   --> src/main.rs:35:35
[INFO] [stderr]    |
[INFO] [stderr] 35 | use vec_graph::{Graph, NodeIndex, EdgeIndex};
[INFO] [stderr]    |                                   ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:132:10
[INFO] [stderr]     |
[INFO] [stderr] 132 |     for (i, set) in rr_sets.iter().enumerate() {
[INFO] [stderr]     |          ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.tiptop.5hx408l8-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43" "/opt/crater/target/debug/deps/tiptop-ea06ebf6231d7b43.3z0pjgysb49z0lf4.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-Wl,-O1" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libgurobi-9c6a6a01b41214a5.rlib" "/opt/crater/target/debug/deps/librand_mersenne_twister-ed9032c63385e99b.rlib" "/opt/crater/target/debug/deps/libbincode-303230c22f852440.rlib" "/opt/crater/target/debug/deps/libbyteorder-0086750ad75a2521.rlib" "/opt/crater/target/debug/deps/libserde_json-886332678cd99399.rlib" "/opt/crater/target/debug/deps/libdtoa-f46d6491bcb00eaf.rlib" "/opt/crater/target/debug/deps/libitoa-d6d9233b9c2ab609.rlib" "/opt/crater/target/debug/deps/libslog_json-82829efef98f8c57.rlib" "/opt/crater/target/debug/deps/libserde_json-4c9f55c36df97a6e.rlib" "/opt/crater/target/debug/deps/libdtoa-a9d6c559162083d1.rlib" "/opt/crater/target/debug/deps/libitoa-b4859d5e25ec752f.rlib" "/opt/crater/target/debug/deps/libslog_serde-21b04c9b4467cdb6.rlib" "/opt/crater/target/debug/deps/libserde-683798b4294c6c31.rlib" "/opt/crater/target/debug/deps/libslog_term-f53d12c3d63e25dd.rlib" "/opt/crater/target/debug/deps/libchrono-d0a3caea81d5a309.rlib" "/opt/crater/target/debug/deps/libnum-f838b30c4baffb58.rlib" "/opt/crater/target/debug/deps/libnum_iter-b53f2b0ca6d8e053.rlib" "/opt/crater/target/debug/deps/libnum_integer-554f506e42793eb1.rlib" "/opt/crater/target/debug/deps/libnum_traits-20a7e63852dc1893.rlib" "/opt/crater/target/debug/deps/libtime-2c7c99db4e83ee95.rlib" "/opt/crater/target/debug/deps/libisatty-76b98dcd0713fe6a.rlib" "/opt/crater/target/debug/deps/libslog_stream-2bde36b6896203fd.rlib" "/opt/crater/target/debug/deps/libslog_extra-030fde3406d52052.rlib" "/opt/crater/target/debug/deps/libslog-c52472c1d72b8405.rlib" "/opt/crater/target/debug/deps/libdocopt-191b444900ea4bea.rlib" "/opt/crater/target/debug/deps/libserde-56fa3ad7f25e7be7.rlib" "/opt/crater/target/debug/deps/libstrsim-c5318ba76528e989.rlib" "/opt/crater/target/debug/deps/libregex-1a4f860bbda58e34.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-df0050635b13378d.rlib" "/opt/crater/target/debug/deps/libregex_syntax-c1d2f87f98a1f9af.rlib" "/opt/crater/target/debug/deps/libthread_local-a9a12c9fa86d9527.rlib" "/opt/crater/target/debug/deps/libunreachable-790406874d3a98b8.rlib" "/opt/crater/target/debug/deps/libvoid-57bc4fa24d0dc1e5.rlib" "/opt/crater/target/debug/deps/libaho_corasick-72bc24907d919c96.rlib" "/opt/crater/target/debug/deps/libmemchr-5e21f9e7f5ab2314.rlib" "/opt/crater/target/debug/deps/libris-41924e95d1fbeaff.rlib" "/opt/crater/target/debug/deps/libas_num-61d92df94302a30c.rlib" "/opt/crater/target/debug/deps/libbit_set-4018dea6ff85e352.rlib" "/opt/crater/target/debug/deps/libbit_vec-623426dafb87d1d4.rlib" "/opt/crater/target/debug/deps/libcapngraph-31207ecdb7f3d38b.rlib" "/opt/crater/target/debug/deps/libcapnp-c9cdc69292f11afb.rlib" "/opt/crater/target/debug/deps/libbyteorder-7e9d10e077b1670f.rlib" "/opt/crater/target/debug/deps/libvec_graph-1dc406b078e29bc1.rlib" "/opt/crater/target/debug/deps/libfnv-697b51b00b385f12.rlib" "/opt/crater/target/debug/deps/libpetgraph-7b5d974050a0cb30.rlib" "/opt/crater/target/debug/deps/libquickcheck-fbb91b80b416e6d5.rlib" "/opt/crater/target/debug/deps/libenv_logger-21ef3c855ccb62fd.rlib" "/opt/crater/target/debug/deps/libregex-c3b08ee4d17f3a8d.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-6caef8fbad7a915e.rlib" "/opt/crater/target/debug/deps/libregex_syntax-36550d8506f0a3a9.rlib" "/opt/crater/target/debug/deps/libthread_local-45745cee1e58cdb2.rlib" "/opt/crater/target/debug/deps/libthread_id-6b9ab9dc7b2638e5.rlib" "/opt/crater/target/debug/deps/libaho_corasick-02d3f0321e3f8fcd.rlib" "/opt/crater/target/debug/deps/libmemchr-b6872d6a602aa178.rlib" "/opt/crater/target/debug/deps/liblog-eeda5ac5ae236616.rlib" "/opt/crater/target/debug/deps/libordermap-be86ff4e7520bfd4.rlib" "/opt/crater/target/debug/deps/libfixedbitset-db159d098e3fb632.rlib" "/opt/crater/target/debug/deps/libstatrs-d45b5d533d73d84e.rlib" "/opt/crater/target/debug/deps/librayon-7fb744870c8bdb75.rlib" "/opt/crater/target/debug/deps/librayon_core-e8df2181e7010b7f.rlib" "/opt/crater/target/debug/deps/librand-2775bdcea8d8c04f.rlib" "/opt/crater/target/debug/deps/libnum_cpus-051fd1a230ef0603.rlib" "/opt/crater/target/debug/deps/liblibc-345fbb5c7689971a.rlib" "/opt/crater/target/debug/deps/liblazy_static-162c69b32c59c5e9.rlib" "/opt/crater/target/debug/deps/libcoco-cee2fc500e91c9fa.rlib" "/opt/crater/target/debug/deps/libscopeguard-d44cfed04b66cd21.rlib" "/opt/crater/target/debug/deps/libeither-dbe9dd7caeabe30c.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-lgurobi75" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lgurobi75
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `tiptop`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a8f6ebe0015da0c27581242a9572f7d38223c10a474580920586a0209f1b01b7"`
[INFO] running `"docker" "rm" "-f" "a8f6ebe0015da0c27581242a9572f7d38223c10a474580920586a0209f1b01b7"`
[INFO] [stdout] a8f6ebe0015da0c27581242a9572f7d38223c10a474580920586a0209f1b01b7