[INFO] cloning repository https://github.com/darkwater/tear
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darkwater/tear" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarkwater%2Ftear", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarkwater%2Ftear'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b3294a74cb3770646f50f1ef977fa7a7e9b3bf0
[INFO] testing darkwater/tear against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarkwater%2Ftear" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/darkwater/tear on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/darkwater/tear
[INFO] finished tweaking git repo https://github.com/darkwater/tear
[INFO] tweaked toml for git repo https://github.com/darkwater/tear written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/darkwater/tear already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbf5d805894c60897af19c0f5bcbb411d1eb0511babea5ddcfa2d4022b704705
[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" "fbf5d805894c60897af19c0f5bcbb411d1eb0511babea5ddcfa2d4022b704705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbf5d805894c60897af19c0f5bcbb411d1eb0511babea5ddcfa2d4022b704705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf5d805894c60897af19c0f5bcbb411d1eb0511babea5ddcfa2d4022b704705", kill_on_drop: false }`
[INFO] [stdout] fbf5d805894c60897af19c0f5bcbb411d1eb0511babea5ddcfa2d4022b704705
[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=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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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] 4d999a159363384008ec02b6b2ca328b55cb75dbeac3c6c3921e95697880ec6e
[INFO] running `Command { std: "docker" "start" "-a" "4d999a159363384008ec02b6b2ca328b55cb75dbeac3c6c3921e95697880ec6e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling term v0.4.5
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]    Compiling bitflags v0.8.2
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling libudev-sys v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr] error: failed to run custom build command for `libudev-sys v0.1.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libudev-sys-06d532cad99246fd/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rustc-link-search=native=/lib/x86_64-linux-gnu
[INFO] [stderr]   cargo:rustc-link-lib=udev
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libudev-sys-0.1.3/build.rs:13:40
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x557e15d84b70 - std::backtrace_rs::backtrace::libunwind::trace::h95fc93571932622e
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x557e15d84b70 - std::backtrace_rs::backtrace::trace_unsynchronized::h4d0b90afc33151fd
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x557e15d84b70 - std::sys_common::backtrace::_print_fmt::h93d302d001a3bf01
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x557e15d84b70 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7881e3a580134f9a
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x557e15da364c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]      5:     0x557e15d81682 - std::io::Write::write_fmt::h24485de26f355188
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]      6:     0x557e15d86f75 - std::sys_common::backtrace::_print::h3e3f9fed81bc11e9
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x557e15d86f75 - std::sys_common::backtrace::print::hd22ac23fed5071c8
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x557e15d86f75 - std::panicking::default_hook::{{closure}}::h1647bdcf68060e17
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x557e15d86aca - std::panicking::default_hook::hb08853b392b9404b
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x557e15d87711 - std::panicking::rust_panic_with_hook::h3624ee29da369ede
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x557e15d87257 - std::panicking::begin_panic_handler::{{closure}}::hefcfcedcde6bb6d9
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x557e15d8502c - std::sys_common::backtrace::__rust_end_short_backtrace::heb130cec93caa706
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x557e15d871b9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x557e15da29f1 - core::panicking::panic_fmt::hb15d6f55e8472f62
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x557e15da2813 - core::option::expect_none_failed::he492a18657d97593
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/option.rs:1268:5
[INFO] [stderr]     16:     0x557e15d509d0 - core::result::Result<T,E>::unwrap::hfc26eaa7cf2457fd
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/result.rs:973:23
[INFO] [stderr]     17:     0x557e15d4e362 - build_script_build::check_func::hf6f351126a9f1758
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libudev-sys-0.1.3/build.rs:13:5
[INFO] [stderr]     18:     0x557e15d4ebcf - build_script_build::main::h609a7ba939ccaae7
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libudev-sys-0.1.3/build.rs:41:8
[INFO] [stderr]     19:     0x557e15d4f2db - core::ops::function::FnOnce::call_once::h77f08b482dc0d092
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x557e15d4f20e - std::sys_common::backtrace::__rust_begin_short_backtrace::h4896ef9d8139843a
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x557e15d4f5a1 - std::rt::lang_start::{{closure}}::hc30c0bef37c1b5e2
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/rt.rs:66:18
[INFO] [stderr]     22:     0x557e15d87b37 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h194d6aa01fb6b594
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x557e15d87b37 - std::panicking::try::do_call::h4ef477456776cccb
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:379:40
[INFO] [stderr]     24:     0x557e15d87b37 - std::panicking::try::h7f2121b6bb3bbca4
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:343:19
[INFO] [stderr]     25:     0x557e15d87b37 - std::panic::catch_unwind::he974d0ca04309948
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panic.rs:396:14
[INFO] [stderr]     26:     0x557e15d87b37 - std::rt::lang_start_internal::h36e9e78490120b9f
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/rt.rs:51:25
[INFO] [stderr]     27:     0x557e15d4f577 - std::rt::lang_start::hccefa16255ff7662
[INFO] [stderr]                                  at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/rt.rs:65:5
[INFO] [stderr]     28:     0x557e15d4ecba - main
[INFO] [stderr]     29:     0x7fe18aa250b3 - __libc_start_main
[INFO] [stderr]     30:     0x557e15d4e0be - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4d999a159363384008ec02b6b2ca328b55cb75dbeac3c6c3921e95697880ec6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d999a159363384008ec02b6b2ca328b55cb75dbeac3c6c3921e95697880ec6e", kill_on_drop: false }`
[INFO] [stdout] 4d999a159363384008ec02b6b2ca328b55cb75dbeac3c6c3921e95697880ec6e