[INFO] updating cached repository mkeeter/nmbr9-z3
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mkeeter/nmbr9-z3
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mkeeter/nmbr9-z3" "work/ex/beta-1.38-1/sources/1.37.0/gh/mkeeter/nmbr9-z3"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mkeeter/nmbr9-z3'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mkeeter/nmbr9-z3" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkeeter/nmbr9-z3"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkeeter/nmbr9-z3'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 103368b9cb2cfdff2d4cc1831a2946fbafbe58cf
[INFO] sha for GitHub repo mkeeter/nmbr9-z3: 103368b9cb2cfdff2d4cc1831a2946fbafbe58cf
[INFO] validating manifest of mkeeter/nmbr9-z3 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 mkeeter/nmbr9-z3 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 mkeeter/nmbr9-z3
[INFO] finished frobbing mkeeter/nmbr9-z3
[INFO] frobbed toml for mkeeter/nmbr9-z3 written to work/ex/beta-1.38-1/sources/1.37.0/gh/mkeeter/nmbr9-z3/Cargo.toml
[INFO] started frobbing mkeeter/nmbr9-z3
[INFO] finished frobbing mkeeter/nmbr9-z3
[INFO] frobbed toml for mkeeter/nmbr9-z3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkeeter/nmbr9-z3/Cargo.toml
[INFO] crate mkeeter/nmbr9-z3 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] testing mkeeter/nmbr9-z3 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mkeeter/nmbr9-z3:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 873c766b71c6e506cfaed6a0b801cd89c86ea5883dc114374910c50b550c497d
[INFO] running `"docker" "start" "-a" "873c766b71c6e506cfaed6a0b801cd89c86ea5883dc114374910c50b550c497d"`
[INFO] [stderr]    Compiling z3-sys v0.4.0 (https://github.com/prove-rs/z3.rs#b39aa9f8)
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling z3 v0.3.2 (https://github.com/prove-rs/z3.rs#b39aa9f8)
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling nmbr9-z3 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/main.rs:490:9
[INFO] [stderr]     |
[INFO] [stderr] 490 |     for t in targets {
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:505:9
[INFO] [stderr]     |
[INFO] [stderr] 505 |     for i in 0..10 {
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:176:17
[INFO] [stderr]     |
[INFO] [stderr] 176 |             for k in 0..(i % 3) {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `most_pieces`
[INFO] [stderr]    --> src/main.rs:262:13
[INFO] [stderr]     |
[INFO] [stderr] 262 |         let most_pieces = self.0.iter().map(|v| v.len()).max().unwrap_or(0);
[INFO] [stderr]     |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_most_pieces`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:472:9
[INFO] [stderr]     |
[INFO] [stderr] 472 |     let mut base = (1..(3 as usize).pow(5))
[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: method is never used: `as_u128`
[INFO] [stderr]    --> src/main.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn as_u128(&self) -> u128 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] 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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.nmbr9_z3.baq3zggu-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586" "/opt/crater/target/debug/deps/nmbr9_z3-98c82b1c2b4e1586.1ozwcqduv9bgjfm9.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librayon-e1671aa45410cd60.rlib" "/opt/crater/target/debug/deps/libeither-1d8cfd8a86cf0dc0.rlib" "/opt/crater/target/debug/deps/librayon_core-d0caadfba84f9174.rlib" "/opt/crater/target/debug/deps/libnum_cpus-1afeef8b902f7ab8.rlib" "/opt/crater/target/debug/deps/libcrossbeam_deque-a2b4cecc17daebd9.rlib" "/opt/crater/target/debug/deps/libcrossbeam_epoch-bf5a71acb4b5d4f1.rlib" "/opt/crater/target/debug/deps/libscopeguard-316f896e0d3e978a.rlib" "/opt/crater/target/debug/deps/libmemoffset-6c4b37f364c61d2a.rlib" "/opt/crater/target/debug/deps/libcrossbeam_utils-4ee4091798a829a0.rlib" "/opt/crater/target/debug/deps/libarrayvec-113ef836fc6f0f3a.rlib" "/opt/crater/target/debug/deps/libnodrop-844425db77ee9480.rlib" "/opt/crater/target/debug/deps/librand-b5520946c63b2816.rlib" "/opt/crater/target/debug/deps/librand_xorshift-f8a998e3624ee34f.rlib" "/opt/crater/target/debug/deps/librand_pcg-9bed347662758de4.rlib" "/opt/crater/target/debug/deps/librand_hc-6a64bd9792c35560.rlib" "/opt/crater/target/debug/deps/librand_chacha-9f9b4138a3dc3aa6.rlib" "/opt/crater/target/debug/deps/librand_isaac-f09feb6901c6cac7.rlib" "/opt/crater/target/debug/deps/librand_os-328c6266c995028c.rlib" "/opt/crater/target/debug/deps/liblibc-53398b030dc76cdf.rlib" "/opt/crater/target/debug/deps/librand_core-562aeeaf733cf7c9.rlib" "/opt/crater/target/debug/deps/libz3-7b939305861d01a2.rlib" "/opt/crater/target/debug/deps/libz3_sys-b64de9c8b9a2dd15.rlib" "/opt/crater/target/debug/deps/liblazy_static-024dbe6825df62a4.rlib" "/opt/crater/target/debug/deps/liblog-b834723f16d525d5.rlib" "/opt/crater/target/debug/deps/libcfg_if-3f691fa550e97962.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-4a76ff35a356aedf.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e11c7b3b3225afe2.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-13217ede3d276f16.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-621a9ee22da6caa1.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-546c844e8071bbeb.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-be9569e4d599746f.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-47d8845cef2a3bc5.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-017511bce73a530c.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-be7979c57a08057b.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d6459c4f0817c67c.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-580035dd98451925.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-aee5c24fff305dea.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-8a55a4098920125a.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-9fc4b5be2ba5cc19.rlib" "-Wl,-Bdynamic" "-lutil" "-lutil" "-lz3" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lz3
[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 `nmbr9-z3`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "873c766b71c6e506cfaed6a0b801cd89c86ea5883dc114374910c50b550c497d"`
[INFO] running `"docker" "rm" "-f" "873c766b71c6e506cfaed6a0b801cd89c86ea5883dc114374910c50b550c497d"`
[INFO] [stdout] 873c766b71c6e506cfaed6a0b801cd89c86ea5883dc114374910c50b550c497d