[INFO] fetching crate libfuzzer-sys 0.3.5...
[INFO] testing libfuzzer-sys-0.3.5 against 1.49.0 for beta-1.50-1
[INFO] extracting crate libfuzzer-sys 0.3.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate libfuzzer-sys 0.3.5 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libfuzzer-sys 0.3.5
[INFO] finished tweaking crates.io crate libfuzzer-sys 0.3.5
[INFO] tweaked toml for crates.io crate libfuzzer-sys 0.3.5 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffef42a887fbdf0f8d7e8eb06e03e09bf1df4d75d14a0ec141a0bb161b104b51
[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" "ffef42a887fbdf0f8d7e8eb06e03e09bf1df4d75d14a0ec141a0bb161b104b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffef42a887fbdf0f8d7e8eb06e03e09bf1df4d75d14a0ec141a0bb161b104b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffef42a887fbdf0f8d7e8eb06e03e09bf1df4d75d14a0ec141a0bb161b104b51", kill_on_drop: false }`
[INFO] [stdout] ffef42a887fbdf0f8d7e8eb06e03e09bf1df4d75d14a0ec141a0bb161b104b51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7faf1e393885529c8795069d353a5c04f1d8dbb9a63dcc36932aea910d2d1cd1
[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" "7faf1e393885529c8795069d353a5c04f1d8dbb9a63dcc36932aea910d2d1cd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling arbitrary v0.4.7
[INFO] [stderr]    Compiling libfuzzer-sys v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.02s
[INFO] running `Command { std: "docker" "inspect" "7faf1e393885529c8795069d353a5c04f1d8dbb9a63dcc36932aea910d2d1cd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7faf1e393885529c8795069d353a5c04f1d8dbb9a63dcc36932aea910d2d1cd1", kill_on_drop: false }`
[INFO] [stdout] 7faf1e393885529c8795069d353a5c04f1d8dbb9a63dcc36932aea910d2d1cd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0d9b5c737d055549ff976101e04e8efaeab44747c159be1ba4be3415049c096
[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" "c0d9b5c737d055549ff976101e04e8efaeab44747c159be1ba4be3415049c096", kill_on_drop: false }`
[INFO] [stderr]    Compiling libfuzzer-sys v0.3.5 (/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/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e" "/opt/rustwide/target/debug/deps/libfuzzer_sys-2b702ce9846dd15e.45ojd81ijk0d8oys.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-ad2a74ea39a828a5/out" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-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/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-6609e81d71a1bf05.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-c352aab3e89370e6.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-5a89b15f567bd092.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-f48d3ad387757b0f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-bf2dc5d6d88f70a5.rlib" "/opt/rustwide/target/debug/deps/libarbitrary-6af396b2150d7384.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/build/libfuzzer-sys-ad2a74ea39a828a5/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-2b702ce9846dd15e.libfuzzer_sys.a1nsaxce-cgu.2.rcgu.o:libfuzzer_sys.a1nsaxce-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" "c0d9b5c737d055549ff976101e04e8efaeab44747c159be1ba4be3415049c096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0d9b5c737d055549ff976101e04e8efaeab44747c159be1ba4be3415049c096", kill_on_drop: false }`
[INFO] [stdout] c0d9b5c737d055549ff976101e04e8efaeab44747c159be1ba4be3415049c096