[INFO] cloning repository https://github.com/LnL7/letty
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LnL7/letty" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLnL7%2Fletty", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLnL7%2Fletty'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 372be41dda29b059fef0e82720f887e92581c5c5
[INFO] testing LnL7/letty against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLnL7%2Fletty" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LnL7/letty 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 git repo https://github.com/LnL7/letty
[INFO] finished tweaking git repo https://github.com/LnL7/letty
[INFO] tweaked toml for git repo https://github.com/LnL7/letty written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/LnL7/letty already has a lockfile, it will not be regenerated
[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 io-kit-sys v0.1.0
[INFO] [stderr]   Downloaded mach v0.2.3
[INFO] [stderr]   Downloaded libc v0.2.68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6eddb5eabdacc1bc647c47aaefef8596943a7b74b9829f40ceed352203a99e60
[INFO] running `Command { std: "docker" "start" "-a" "6eddb5eabdacc1bc647c47aaefef8596943a7b74b9829f40ceed352203a99e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6eddb5eabdacc1bc647c47aaefef8596943a7b74b9829f40ceed352203a99e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eddb5eabdacc1bc647c47aaefef8596943a7b74b9829f40ceed352203a99e60", kill_on_drop: false }`
[INFO] [stdout] 6eddb5eabdacc1bc647c47aaefef8596943a7b74b9829f40ceed352203a99e60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] faeb8a5b5b9f12192a034437c645790f1cbbcca8e4624af6601d247902182a5d
[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" "faeb8a5b5b9f12192a034437c645790f1cbbcca8e4624af6601d247902182a5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling core-foundation-sys v0.6.2
[INFO] [stderr]    Compiling io-kit-sys v0.1.0
[INFO] [stderr]    Compiling mach v0.2.3
[INFO] [stderr]    Compiling core-foundation v0.6.4
[INFO] [stderr]    Compiling letty v0.1.0 (/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/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e" "/opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.4rq5xvts9c6j2pl1.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-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" "/opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib" "/opt/rustwide/target/debug/deps/libio_kit_sys-7973ef64d239d984.rlib" "/opt/rustwide/target/debug/deps/libmach-43304633d8e6321b.rlib" "/opt/rustwide/target/debug/deps/libcore_foundation-632ceba64a7517ab.rlib" "/opt/rustwide/target/debug/deps/liblibc-b8a4fdd5ee616614.rlib" "/opt/rustwide/target/debug/deps/libcore_foundation_sys-6393519ca1c7170c.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" "-lutil" "-ldl" "-lutil" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/letty_blink-93f872f85497ec3e.letty_blink.4i2sti4n-cgu.13.rcgu.o: in function `<core_foundation::dictionary::CFDictionary<K,V> as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/dictionary.rs:29: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.1.rcgu.o): in function `<letty::hid::device::IOHIDDevice as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/device.rs:27: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.1.rcgu.o): in function `letty::hid::device::IOHIDDevice::get_matching_elements':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/device.rs:34: undefined reference to `IOHIDDeviceCopyMatchingElements'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/device.rs:40: undefined reference to `CFArrayGetCount'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/device.rs:55: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/device.rs:44: undefined reference to `CFArrayGetValueAtIndex'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.1.rcgu.o): in function `letty::hid::device::IOHIDDevice::set_value':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/device.rs:84: undefined reference to `kCFAllocatorDefault'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/device.rs:85: undefined reference to `IOHIDValueCreateWithIntegerValue'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/device.rs:86: undefined reference to `IOHIDDeviceSetValue'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/device.rs:88: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.1.rcgu.o): in function `<letty::hid::device::IOHIDDevice as core_foundation::base::TCFType>::wrap_under_get_rule':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/lib.rs:98: undefined reference to `CFRetain'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.11.rcgu.o): in function `core_foundation::dictionary::CFDictionary<K,V>::from_CFType_pairs':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/dictionary.rs:46: undefined reference to `kCFAllocatorDefault'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/dictionary.rs:(.text._ZN15core_foundation10dictionary25CFDictionary$LT$K$C$V$GT$17from_CFType_pairs17he2da1707fa39a3d6E+0x12c): undefined reference to `kCFTypeDictionaryKeyCallBacks'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/dictionary.rs:(.text._ZN15core_foundation10dictionary25CFDictionary$LT$K$C$V$GT$17from_CFType_pairs17he2da1707fa39a3d6E+0x133): undefined reference to `kCFTypeDictionaryValueCallBacks'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/dictionary.rs:46: undefined reference to `CFDictionaryCreate'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.15.rcgu.o): in function `<core_foundation::number::CFNumber as core::convert::From<i32>>::from':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/number.rs:68: undefined reference to `kCFAllocatorDefault'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/number.rs:70: undefined reference to `CFNumberCreate'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.5.rcgu.o): in function `<letty::hid::manager::IOHIDManager as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/manager.rs:29: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.5.rcgu.o): in function `letty::hid::manager::IOHIDManager::new':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/manager.rs:34: undefined reference to `kCFAllocatorDefault'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/manager.rs:35: undefined reference to `IOHIDManagerCreate'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.5.rcgu.o): in function `letty::hid::manager::IOHIDManager::open':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/manager.rs:48: undefined reference to `IOHIDManagerOpen'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.5.rcgu.o): in function `letty::hid::manager::IOHIDManager::close':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/manager.rs:56: undefined reference to `IOHIDManagerSetDeviceMatching'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/manager.rs:57: undefined reference to `IOHIDManagerClose'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.5.rcgu.o): in function `letty::hid::manager::IOHIDManager::set_device_matching':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/manager.rs:61: undefined reference to `IOHIDManagerSetDeviceMatching'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.5.rcgu.o): in function `letty::hid::manager::IOHIDManager::get_devices':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/manager.rs:65: undefined reference to `IOHIDManagerCopyDevices'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/manager.rs:69: undefined reference to `CFSetGetCount'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/manager.rs:72: undefined reference to `CFSetApplyFunction'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/workdir/src/hid/manager.rs:74: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.6.rcgu.o): in function `core_foundation::string::CFString::new':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/string.rs:109: undefined reference to `kCFAllocatorDefault'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/string.rs:111: undefined reference to `CFStringCreateWithBytes'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.9.rcgu.o): in function `<letty::hid::element::IOHIDElement as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/workdir/src/hid/element.rs:20: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libletty-d1097f04bb3986a5.rlib(letty-d1097f04bb3986a5.letty.6kfij0s2-cgu.9.rcgu.o): in function `<letty::hid::element::IOHIDElement as core_foundation::base::TCFType>::wrap_under_get_rule':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/lib.rs:98: undefined reference to `CFRetain'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcore_foundation-632ceba64a7517ab.rlib(core_foundation-632ceba64a7517ab.core_foundation.7of9r3gl-cgu.5.rcgu.o): in function `<core_foundation::number::CFNumber as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/lib.rs:67: undefined reference to `CFRelease'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcore_foundation-632ceba64a7517ab.rlib(core_foundation-632ceba64a7517ab.core_foundation.7of9r3gl-cgu.6.rcgu.o): in function `<core_foundation::string::CFString as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core-foundation-0.6.4/src/lib.rs:67: undefined reference to `CFRelease'
[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 `letty`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "faeb8a5b5b9f12192a034437c645790f1cbbcca8e4624af6601d247902182a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faeb8a5b5b9f12192a034437c645790f1cbbcca8e4624af6601d247902182a5d", kill_on_drop: false }`
[INFO] [stdout] faeb8a5b5b9f12192a034437c645790f1cbbcca8e4624af6601d247902182a5d
