[INFO] cloning repository https://github.com/42f87d89/Guitar-String
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/42f87d89/Guitar-String" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42f87d89%2FGuitar-String", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42f87d89%2FGuitar-String'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5bdd150db7df907dcdce44e5fe9558de72ebf94f
[INFO] testing 42f87d89/Guitar-String against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42f87d89%2FGuitar-String" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/42f87d89/Guitar-String on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/42f87d89/Guitar-String
[INFO] finished tweaking git repo https://github.com/42f87d89/Guitar-String
[INFO] tweaked toml for git repo https://github.com/42f87d89/Guitar-String written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/42f87d89/Guitar-String already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sdl v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d455ed397f05ca173e0fbd7bfdf601d10a52b5f8f1e1489d6a70de2bb69d91a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2d455ed397f05ca173e0fbd7bfdf601d10a52b5f8f1e1489d6a70de2bb69d91a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d455ed397f05ca173e0fbd7bfdf601d10a52b5f8f1e1489d6a70de2bb69d91a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d455ed397f05ca173e0fbd7bfdf601d10a52b5f8f1e1489d6a70de2bb69d91a", kill_on_drop: false }`
[INFO] [stdout] 2d455ed397f05ca173e0fbd7bfdf601d10a52b5f8f1e1489d6a70de2bb69d91a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d8b12b54c1f36cf7c3ea6a1fa2e8dd907f590bf10fa515e0dc59551d091560f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2d8b12b54c1f36cf7c3ea6a1fa2e8dd907f590bf10fa515e0dc59551d091560f", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl v0.3.6
[INFO] [stderr]    Compiling chord_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         thread::sleep_ms(1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/main.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn size(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_sine`
[INFO] [stdout]   --> src/main.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_sine(n: u16, k: f64) -> Chord {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.chord_sim.2pu7ky1o-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c" "/opt/rustwide/target/debug/deps/chord_sim-37a52619ef225e4c.2ejlv6875dxpv3ic.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl-3bebe4dbfe7c4907.rlib" "/opt/rustwide/target/debug/deps/libnum-c89301de58d61aa5.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-ace401eb9d859349.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-2efb18a5dc1cd5de.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-a533511d45cca78e.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-7a3ef2123a40ae59.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-aa130faf49ab8f05.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-d35afb76f1c5386c.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-cb2b583837c7ff21.rlib" "/opt/rustwide/target/debug/deps/librand-8db4f64e2a066c2e.rlib" "/opt/rustwide/target/debug/deps/librand-5d509fc47140bcd4.rlib" "/opt/rustwide/target/debug/deps/liblibc-77d6541a42757d2c.rlib" "/opt/rustwide/target/debug/deps/liblibc-dae4fa966ced2dd5.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-7444fd17919e9af0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0ee2f67026959ab7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-df1bcd1e82256d04.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-ed9ecf1b54021131.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0ede66bb24e94b96.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7c2de7f50940865c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-b138d50085fd4683.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6576870d8f2b9ae2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-042a30c5f67b2c91.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-90b3063cd7b22527.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-17f9484f8dc4da1e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-df38345acd9d92e1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5e10ca10bdd9e54.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-3a4e739a77468800.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lSDL" "-lc" "-lm" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lSDL
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chord_sim`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2d8b12b54c1f36cf7c3ea6a1fa2e8dd907f590bf10fa515e0dc59551d091560f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8b12b54c1f36cf7c3ea6a1fa2e8dd907f590bf10fa515e0dc59551d091560f", kill_on_drop: false }`
[INFO] [stdout] 2d8b12b54c1f36cf7c3ea6a1fa2e8dd907f590bf10fa515e0dc59551d091560f