[INFO] cloning repository https://github.com/Crypto-Spartan/matchmaker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Crypto-Spartan/matchmaker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypto-Spartan%2Fmatchmaker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypto-Spartan%2Fmatchmaker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb460d1d6de9d4d78745bd5d583ff5f0069ec348
[INFO] testing Crypto-Spartan/matchmaker against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypto-Spartan%2Fmatchmaker" "/workspace/builds/worker-112/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-112/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Crypto-Spartan/matchmaker on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Crypto-Spartan/matchmaker
[INFO] finished tweaking git repo https://github.com/Crypto-Spartan/matchmaker
[INFO] tweaked toml for git repo https://github.com/Crypto-Spartan/matchmaker written to /workspace/builds/worker-112/source/Cargo.toml
[INFO] crate git repo https://github.com/Crypto-Spartan/matchmaker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coin_cbc_sys v0.1.1
[INFO] [stderr]   Downloaded coin_cbc v0.1.5
[INFO] [stderr]   Downloaded good_lp v1.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c16aa024bd465aee1e23fc7ea0bf703fc37f1bd2377828e7773311d9a493e289
[INFO] running `Command { std: "docker" "start" "-a" "c16aa024bd465aee1e23fc7ea0bf703fc37f1bd2377828e7773311d9a493e289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c16aa024bd465aee1e23fc7ea0bf703fc37f1bd2377828e7773311d9a493e289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c16aa024bd465aee1e23fc7ea0bf703fc37f1bd2377828e7773311d9a493e289", kill_on_drop: false }`
[INFO] [stdout] c16aa024bd465aee1e23fc7ea0bf703fc37f1bd2377828e7773311d9a493e289
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fbd80d72950fdad985f2411039c1763c719eedb19ea7636f472602c43710c85
[INFO] running `Command { std: "docker" "start" "-a" "1fbd80d72950fdad985f2411039c1763c719eedb19ea7636f472602c43710c85", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling coin_cbc_sys v0.1.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling coin_cbc v0.1.5
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling good_lp v1.1.3
[INFO] [stderr]    Compiling matchmaker v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `max_team_diff` is never read
[INFO] [stdout]    --> src/main.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |             max_team_diff = 1100;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:129:26
[INFO] [stdout]     |
[INFO] [stdout] 129 |         Err(e) => panic!(e)
[INFO] [stdout]     |                          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 129 |         Err(e) => panic!("{}", e)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 129 |         Err(e) => std::panic::panic_any(e)
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.matchmaker.47b5feb0-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32.2iw9iy2tvnm6zfeu.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libgood_lp-f8f48a0738d0cc2f.rlib" "/opt/rustwide/target/debug/deps/libcoin_cbc-f873fabe88aa0be7.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-e92083d5a39a8b50.rlib" "/opt/rustwide/target/debug/deps/libcoin_cbc_sys-0d4d45a742c0adb6.rlib" "/opt/rustwide/target/debug/deps/libfnv-059813dc4f8dd4c8.rlib" "/opt/rustwide/target/debug/deps/libitertools-ae4a8260a0a356f1.rlib" "/opt/rustwide/target/debug/deps/libeither-867d2789c96c5e02.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-197d933f09d9a590.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-46a006cddfd334f0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-5b9870310e470b38.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-260022ba8f1ab4ee.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-71377435a799394f.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-658ee5924fde57cd.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-9e8627da6bd1b94a.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-19fdaac49f59be84.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-cb00e2691ea45905.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-50f6726defae5ae1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-2afc16311deea26e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bb5cb0fe086ee8cf.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-896053247b5dfd0b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-735e1f2ac3cf23be.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-9dfb6622644c732c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-beea7d9617fe25c5.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-8ef7dd43fc671f88.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a9a3b2ad67977f47.rlib" "-Wl,-Bdynamic" "-lCbcSolver" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/matchmaker-79a713719146ef32" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lCbcSolver
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `matchmaker` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1fbd80d72950fdad985f2411039c1763c719eedb19ea7636f472602c43710c85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fbd80d72950fdad985f2411039c1763c719eedb19ea7636f472602c43710c85", kill_on_drop: false }`
[INFO] [stdout] 1fbd80d72950fdad985f2411039c1763c719eedb19ea7636f472602c43710c85