[INFO] cloning repository https://github.com/cdown/mack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdown/mack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdown%2Fmack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdown%2Fmack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c19102894520f49aa582461a1c4b10f2859592fd
[INFO] testing cdown/mack against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdown%2Fmack" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cdown/mack on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cdown/mack
[INFO] finished tweaking git repo https://github.com/cdown/mack
[INFO] tweaked toml for git repo https://github.com/cdown/mack written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate git repo https://github.com/cdown/mack already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded taglib-sys v1.0.0
[INFO] [stderr]   Downloaded taglib v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1fdfa1f865d5429ed0cbc00a3988f43939047b3406eeb5e9c9eaf267f029f54b
[INFO] running `Command { std: "docker" "start" "-a" "1fdfa1f865d5429ed0cbc00a3988f43939047b3406eeb5e9c9eaf267f029f54b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fdfa1f865d5429ed0cbc00a3988f43939047b3406eeb5e9c9eaf267f029f54b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fdfa1f865d5429ed0cbc00a3988f43939047b3406eeb5e9c9eaf267f029f54b", kill_on_drop: false }`
[INFO] [stdout] 1fdfa1f865d5429ed0cbc00a3988f43939047b3406eeb5e9c9eaf267f029f54b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d1fecc220f23ba58ce6695dd861e301871915fc04721996e4e76383d57fba9f
[INFO] running `Command { std: "docker" "start" "-a" "4d1fecc220f23ba58ce6695dd861e301871915fc04721996e4e76383d57fba9f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling taglib-sys v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling taglib v1.0.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling mack v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.mack.ed32a183-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f.13lpeyxj5y7v37tb.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libtaglib-1b8b784cfba85ef8.rlib" "/opt/rustwide/target/debug/deps/libtaglib_sys-b71ec5d2197bffc2.rlib" "/opt/rustwide/target/debug/deps/libregex-376d40b516282078.rlib" "/opt/rustwide/target/debug/deps/libthread_local-fca49ebfe19b2a13.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-1f645e41df728982.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-67d19f2a98ecad87.rlib" "/opt/rustwide/target/debug/deps/libmemchr-15ff39dbd52f8080.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rlib" "/opt/rustwide/target/debug/deps/libwalkdir-1c63563fd104183e.rlib" "/opt/rustwide/target/debug/deps/libsame_file-36dfff0ef8311abf.rlib" "/opt/rustwide/target/debug/deps/libclap-c882bb8f5a512c49.rlib" "/opt/rustwide/target/debug/deps/libvec_map-5f104c2ee05f26e6.rlib" "/opt/rustwide/target/debug/deps/libtextwrap-bad3d17484b64b1a.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-1d2bdd05e197c9de.rlib" "/opt/rustwide/target/debug/deps/libstrsim-0fc606efc91e3789.rlib" "/opt/rustwide/target/debug/deps/libbitflags-117d41ac256572da.rlib" "/opt/rustwide/target/debug/deps/libatty-8f82b38145710d1e.rlib" "/opt/rustwide/target/debug/deps/liblibc-02e6f304da44f42c.rlib" "/opt/rustwide/target/debug/deps/libansi_term-329dab68dba20daf.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-06f01ac2578bda94.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-f9a3c3274a1835e0.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-d4cbb754ee9f4daa.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-95c14e1c1e3ebcc4.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d489f0ca872880cc.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-75f07df0b18fea39.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-0c35b278736219a2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-e530649c9a06e3c6.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-6b148909d375a785.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-cd15fa647f4775d1.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74be3a703f788ba2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-8f2c5b445c28b2e3.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-8480e85e0be96197.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-ac23a75f6f42004e.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-557ba8776e04d182.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-4beb03d03503c439.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-dd7db1bec6909f24.rlib" "-Wl,-Bdynamic" "-ltag_c" "-ltag" "-lutil" "-ldl" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/mack-cb86d5112fb6bc3f" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -ltag_c
[INFO] [stdout]           /usr/bin/ld: cannot find -ltag
[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 `mack` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4d1fecc220f23ba58ce6695dd861e301871915fc04721996e4e76383d57fba9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d1fecc220f23ba58ce6695dd861e301871915fc04721996e4e76383d57fba9f", kill_on_drop: false }`
[INFO] [stdout] 4d1fecc220f23ba58ce6695dd861e301871915fc04721996e4e76383d57fba9f