[INFO] fetching crate libfuzzer-sys 0.3.4...
[INFO] testing libfuzzer-sys-0.3.4 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate libfuzzer-sys 0.3.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libfuzzer-sys 0.3.4 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libfuzzer-sys 0.3.4
[INFO] finished tweaking crates.io crate libfuzzer-sys 0.3.4
[INFO] tweaked toml for crates.io crate libfuzzer-sys 0.3.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_arbitrary v0.4.7
[INFO] [stderr]   Downloaded arbitrary v0.4.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 597640eb709df94475872b97cb4a4d3536507a8ba8c133a8d0ba0815d6c462fc
[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" "597640eb709df94475872b97cb4a4d3536507a8ba8c133a8d0ba0815d6c462fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "597640eb709df94475872b97cb4a4d3536507a8ba8c133a8d0ba0815d6c462fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597640eb709df94475872b97cb4a4d3536507a8ba8c133a8d0ba0815d6c462fc", kill_on_drop: false }`
[INFO] [stdout] 597640eb709df94475872b97cb4a4d3536507a8ba8c133a8d0ba0815d6c462fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 2d436e99d60b0d7ad87c9621cdcdf87e407ec1abc09bbbc1fb3f1002ca483d5c
[INFO] running `Command { std: "docker" "start" "-a" "2d436e99d60b0d7ad87c9621cdcdf87e407ec1abc09bbbc1fb3f1002ca483d5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling arbitrary v0.4.7
[INFO] [stderr]    Compiling libfuzzer-sys v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.53s
[INFO] running `Command { std: "docker" "inspect" "2d436e99d60b0d7ad87c9621cdcdf87e407ec1abc09bbbc1fb3f1002ca483d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d436e99d60b0d7ad87c9621cdcdf87e407ec1abc09bbbc1fb3f1002ca483d5c", kill_on_drop: false }`
[INFO] [stdout] 2d436e99d60b0d7ad87c9621cdcdf87e407ec1abc09bbbc1fb3f1002ca483d5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 521f876d9f0705417e2d4b10b81933ee626d365b097bfba2a5d72002092b037c
[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" "521f876d9f0705417e2d4b10b81933ee626d365b097bfba2a5d72002092b037c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libfuzzer-sys v0.3.4 (/opt/rustwide/workdir)
[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-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272" "/opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.2x34cx8ktu6obn3s.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/libfuzzer-sys-d73222244e0a5188/out" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "-Wl,--whole-archive" "-lfuzzer" "-Wl,--no-whole-archive" "-Wl,-Bdynamic" "-lstdc++" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-8c293b579fdb38fc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-ef7d6114ddb41a44.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-16c582eb506314ba.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-6abbb81e68fea101.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-4437f76c42770bc3.rlib" "/opt/rustwide/target/debug/deps/libarbitrary-fce57a7569076d91.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-3532beb752f910d7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-3529ece450b7f3c6.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-23e8f582a6744f80.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-5e7e0793b29cbf78.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-253e0736424ceb78.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-b6fd484888124c85.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-cca4d20e4b53839c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0a7401891c2a4f50.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-efbb25e073df787e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-25965457612624bc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-09058283ea779342.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-ab973dacc0513511.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b437d6640b1f764b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-8cc0b2380206399c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-727cdf2b6a468113.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cf4d442d877ea2f4.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-7e5b6df427ca977c.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/build/libfuzzer-sys-d73222244e0a5188/out/libfuzzer.a(FuzzerMain.o): in function `main':
[INFO] [stdout]           /opt/rustwide/workdir/libfuzzer/FuzzerMain.cpp:19: multiple definition of `main'; /opt/rustwide/target/debug/deps/libfuzzer_sys-7cd0f9b8d7d2e272.libfuzzer_sys.3zpjxvi6-cgu.2.rcgu.o:libfuzzer_sys.3zpjxvi6-cgu.2:(.text.main+0x0): first defined here
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libfuzzer-sys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "521f876d9f0705417e2d4b10b81933ee626d365b097bfba2a5d72002092b037c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "521f876d9f0705417e2d4b10b81933ee626d365b097bfba2a5d72002092b037c", kill_on_drop: false }`
[INFO] [stdout] 521f876d9f0705417e2d4b10b81933ee626d365b097bfba2a5d72002092b037c
