[INFO] updating cached repository https://github.com/mkeeter/nmbr9-z3
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 103368b9cb2cfdff2d4cc1831a2946fbafbe58cf
[INFO] testing mkeeter/nmbr9-z3 against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkeeter%2Fnmbr9-z3" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkeeter/nmbr9-z3 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mkeeter/nmbr9-z3
[INFO] finished tweaking git repo https://github.com/mkeeter/nmbr9-z3
[INFO] tweaked toml for git repo https://github.com/mkeeter/nmbr9-z3 written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mkeeter/nmbr9-z3 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 1b912f17842513e969173a71cf2abca4cf16454c51efad4d94702fc500776804
[INFO] running `"docker" "start" "-a" "1b912f17842513e969173a71cf2abca4cf16454c51efad4d94702fc500776804"`
[INFO] [stderr]    Compiling z3-sys v0.4.0 (https://github.com/prove-rs/z3.rs#b39aa9f8)
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling rand_os v0.1.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling z3 v0.3.2 (https://github.com/prove-rs/z3.rs#b39aa9f8)
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling nmbr9-z3 v0.1.0 (/opt/rustwide/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/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.nmbr9_z3.9jpoaknw-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025" "/opt/rustwide/target/debug/deps/nmbr9_z3-cbf5e903952f8025.4f8xz3q1f5naab0i.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librayon-cad9bbd994037999.rlib" "/opt/rustwide/target/debug/deps/libeither-218deddf6289c71d.rlib" "/opt/rustwide/target/debug/deps/librayon_core-a84def1967f4cc8e.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-dbc32995be2722f2.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-bcfe45b0443f7819.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-c45106e3ffef13be.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-0684162327b2b1d2.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-97283fd366a3fe51.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-6975b9ce28032754.rlib" "/opt/rustwide/target/debug/deps/libarrayvec-a58159c7d595bbd9.rlib" "/opt/rustwide/target/debug/deps/libnodrop-30dc09557a31fb0d.rlib" "/opt/rustwide/target/debug/deps/librand-e41ced1e580505a4.rlib" "/opt/rustwide/target/debug/deps/librand_xorshift-f27f3651530930b4.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-1ce231bbb93763b7.rlib" "/opt/rustwide/target/debug/deps/librand_hc-bbcbaa40a025ca35.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-ee751ac91ab99876.rlib" "/opt/rustwide/target/debug/deps/librand_isaac-dce7418f4199e2f8.rlib" "/opt/rustwide/target/debug/deps/librand_os-5751090b2093f813.rlib" "/opt/rustwide/target/debug/deps/liblibc-8e7afe12f077b640.rlib" "/opt/rustwide/target/debug/deps/librand_core-97b7d7050440931a.rlib" "/opt/rustwide/target/debug/deps/libz3-7e355eb47ce6553e.rlib" "/opt/rustwide/target/debug/deps/libz3_sys-579784216eece633.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-dc50c07bdb2aa9f0.rlib" "/opt/rustwide/target/debug/deps/liblog-f8aa24668e170227.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-7a542410dd593189.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-db812c66f862af4c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e7871a21575d5ff7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-2f2c581bc0d759e6.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-35731cabc05dc8a0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-36477394541292db.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-8b706b170c1272d8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-801dbb3043ccf581.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-a32aa66ce6f72b21.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d00ea3bfb2bb6c00.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d2c6ebe88c3e113c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-df74f62f6bb60621.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2170473575daeedb.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1a08089bbddc4f51.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f8f562e5472ad5c3.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" "1b912f17842513e969173a71cf2abca4cf16454c51efad4d94702fc500776804"`
[INFO] running `"docker" "rm" "-f" "1b912f17842513e969173a71cf2abca4cf16454c51efad4d94702fc500776804"`
[INFO] [stdout] 1b912f17842513e969173a71cf2abca4cf16454c51efad4d94702fc500776804