[INFO] updating cached repository https://github.com/42f87d89/Guitar-String
[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] 5bdd150db7df907dcdce44e5fe9558de72ebf94f
[INFO] testing 42f87d89/Guitar-String against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2F42f87d89%2FGuitar-String" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/42f87d89/Guitar-String on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/42f87d89/Guitar-String already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-1/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 6ec9d0a2526b563dd641447a66b467b6ab8769d3d8d2d231180f4d797a794ecb
[INFO] running `"docker" "start" "-a" "6ec9d0a2526b563dd641447a66b467b6ab8769d3d8d2d231180f4d797a794ecb"`
[INFO] [stderr]    Compiling sdl v0.3.6
[INFO] [stderr]    Compiling chord_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stderr]    --> src/main.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         thread::sleep_ms(1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn size(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_sine`
[INFO] [stderr]   --> src/main.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn new_sine(n: u16, k: f64) -> Chord {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.chord_sim.96vqs9o1-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb" "/opt/rustwide/target/debug/deps/chord_sim-a6850292254716cb.1tjxv63ws1eszyha.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl-aca829cde5167250.rlib" "/opt/rustwide/target/debug/deps/libnum-2f2488239b13fbdd.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-89e848ee8ea36e78.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-8e800f48bb43d415.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-d9fb93378866e854.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-32acd8f7efa22e3e.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-bbf34e9632c3a30c.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-dbac7e428283a153.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-a4ff9b7e87bbd905.rlib" "/opt/rustwide/target/debug/deps/librand-df37cf038f4c3201.rlib" "/opt/rustwide/target/debug/deps/librand-250eafcf18e8ca2a.rlib" "/opt/rustwide/target/debug/deps/liblibc-a3b13f6b27abcc70.rlib" "/opt/rustwide/target/debug/deps/liblibc-a6f16ea62ac26a77.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-12ce12f1efc08aa3.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-5d3cd1b3ddab72e4.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-f8222943dfd167e2.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-0cd00b2d3108cd48.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-485c05ba6ce1b438.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-63e6b1072426ba59.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-a421aff1d43911ee.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-3deef8ef4fe80dff.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-f65a176f0586269e.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-ad46d4080f4d7e57.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-da6c590582bf0885.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-837ca740df32db0a.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-db27c965e824589f.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-68a4f8466685ed76.rlib" "-Wl,-Bdynamic" "-lSDL" "-lutil" "-lutil" "-lc" "-lm" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lSDL
[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 `chord_sim`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6ec9d0a2526b563dd641447a66b467b6ab8769d3d8d2d231180f4d797a794ecb"`
[INFO] running `"docker" "rm" "-f" "6ec9d0a2526b563dd641447a66b467b6ab8769d3d8d2d231180f4d797a794ecb"`
[INFO] [stdout] 6ec9d0a2526b563dd641447a66b467b6ab8769d3d8d2d231180f4d797a794ecb