[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 master#d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d for pr-83796
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42f87d89%2FGuitar-String" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/42f87d89/Guitar-String on toolchain d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-7/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" "+d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/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[INFO] the lockfile is outdated, regenerating it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" "+d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df817f76b007ace0cd323cd6c8c567f1f794defca1f9a5def96a7ed524269795
[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" "df817f76b007ace0cd323cd6c8c567f1f794defca1f9a5def96a7ed524269795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df817f76b007ace0cd323cd6c8c567f1f794defca1f9a5def96a7ed524269795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df817f76b007ace0cd323cd6c8c567f1f794defca1f9a5def96a7ed524269795", kill_on_drop: false }`
[INFO] [stdout] df817f76b007ace0cd323cd6c8c567f1f794defca1f9a5def96a7ed524269795
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7d96bc5bdf0f778fc4a27a8fc884bf317527a6c5d6c5632163aff0cae447a19a
[INFO] running `Command { std: "docker" "start" "-a" "7d96bc5bdf0f778fc4a27a8fc884bf317527a6c5d6c5632163aff0cae447a19a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[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] [stderr] error: could not compile `chord_sim`
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-L" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.chord_sim.7koeknr5-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f" "/opt/rustwide/target/debug/deps/chord_sim-75fff6ef84a5100f.bfymqz1apa9n3jf.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl-5ed6fd8ac08e7cfd.rlib" "/opt/rustwide/target/debug/deps/libnum-b9b0d7ad07114e67.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-e6d10aaf950a9578.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-b56ef16242f77205.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-5ed436e540dc00ae.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-3a45b7a0cb68c0b0.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-a4c867478928ee66.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-eb19f95cd82aa87f.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-c7454fc88b9bb276.rlib" "/opt/rustwide/target/debug/deps/librand-52ff106d2cdd5b1d.rlib" "/opt/rustwide/target/debug/deps/librand-bbfbb243e9435e2b.rlib" "/opt/rustwide/target/debug/deps/liblibc-bf3c813b97648297.rlib" "/opt/rustwide/target/debug/deps/liblibc-d54959e760dfe167.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-c2ca47afdcc5e309.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-b47be2942017e108.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-20a1e49116ab0df9.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-25e09d9868291683.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-9c99fb6e5ca5159e.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-85040d7563599960.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-0e4f7587da8acf20.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7be0a6711ed15b5c.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-00672fabc4ff9c9d.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-72fe231ef0473d15.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-019d54ecc304b655.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-cc7d9343e4f608be.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e41c6d24baeb2249.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-9849bb0fbad7f0f5.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-a1fd7734706d5518.rlib" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/d408fdd4a82bc3e7ea61dd81bc9a8781b2bf939d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-8b33f9cbbc9652fe.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] [stderr] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7d96bc5bdf0f778fc4a27a8fc884bf317527a6c5d6c5632163aff0cae447a19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d96bc5bdf0f778fc4a27a8fc884bf317527a6c5d6c5632163aff0cae447a19a", kill_on_drop: false }`
[INFO] [stdout] 7d96bc5bdf0f778fc4a27a8fc884bf317527a6c5d6c5632163aff0cae447a19a