[INFO] fetching crate yair 0.1.0...
[INFO] checking yair-0.1.0 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate yair 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate yair 0.1.0 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yair 0.1.0
[INFO] finished tweaking crates.io crate yair 0.1.0
[INFO] tweaked toml for crates.io crate yair 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate yair 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_pipe v0.9.2
[INFO] [stderr]   Downloaded enumset v1.0.6
[INFO] [stderr]   Downloaded endian-type v0.1.2
[INFO] [stderr]   Downloaded darling_core v0.12.2
[INFO] [stderr]   Downloaded darling_macro v0.12.2
[INFO] [stderr]   Downloaded darling v0.12.2
[INFO] [stderr]   Downloaded duct v0.13.4
[INFO] [stderr]   Downloaded shared_child v0.3.4
[INFO] [stderr]   Downloaded radix_trie v0.2.1
[INFO] [stderr]   Downloaded generational-arena v0.2.7
[INFO] [stderr]   Downloaded lit v1.0.3
[INFO] [stderr]   Downloaded blake2b_simd v0.5.9
[INFO] [stderr]   Downloaded nibble_vec v0.1.0
[INFO] [stderr]   Downloaded enumset_derive v0.5.4
[INFO] [stderr]   Downloaded winapi-util v0.1.3
[INFO] [stderr]   Downloaded rmp v0.8.8
[INFO] [stderr]   Downloaded codespan v0.7.0
[INFO] [stderr]   Downloaded envcache v0.1.3
[INFO] [stderr]   Downloaded codespan-reporting v0.7.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9166c05fcb88f0e375d47e0b2b2b0aac8689ec84238b6ca22a736fb9d7165f1b
[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" "9166c05fcb88f0e375d47e0b2b2b0aac8689ec84238b6ca22a736fb9d7165f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9166c05fcb88f0e375d47e0b2b2b0aac8689ec84238b6ca22a736fb9d7165f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9166c05fcb88f0e375d47e0b2b2b0aac8689ec84238b6ca22a736fb9d7165f1b", kill_on_drop: false }`
[INFO] [stdout] 9166c05fcb88f0e375d47e0b2b2b0aac8689ec84238b6ca22a736fb9d7165f1b
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06e1b42b4c30966c96dfe9d831e06f05c1aade35e16c9a0f8e4cf6cdf891f426
[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" "06e1b42b4c30966c96dfe9d831e06f05c1aade35e16c9a0f8e4cf6cdf891f426", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling envcache v0.1.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking codespan v0.7.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling yair v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking codespan-reporting v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr] error: failed to run custom build command for `yair v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/yair-90ef55b9e31adb3c/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Required environment variable 'YAIR_LLVM_INSTALL_DIR' was not set!', build.rs:18:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x56112fca5d20 - std::backtrace_rs::backtrace::libunwind::trace::hfa838fc631229987
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x56112fca5d20 - std::backtrace_rs::backtrace::trace_unsynchronized::h93a23e36ec026219
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x56112fca5d20 - std::sys_common::backtrace::_print_fmt::hba56c7f796a4152f
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x56112fca5d20 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h214637f1e26310e1
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x56112fcbfc5c - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/core/src/fmt/mod.rs:1110:17
[INFO] [stderr]      5:     0x56112fca4385 - std::io::Write::write_fmt::heb07fc0616bbd06d
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/io/mod.rs:1588:15
[INFO] [stderr]      6:     0x56112fca799b - std::sys_common::backtrace::_print::h2c2441c37e894fb5
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x56112fca799b - std::sys_common::backtrace::print::h4fb679ac439362ea
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x56112fca799b - std::panicking::default_hook::{{closure}}::h56bbadec2356e5d2
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x56112fca7471 - std::panicking::default_hook::hb25822b45f6fdc4e
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x56112fca8064 - std::panicking::rust_panic_with_hook::h4da5578e7277d2d4
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x56112fca7b47 - std::panicking::begin_panic_handler::{{closure}}::h003783ddb3cba4e8
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x56112fca61fc - std::sys_common::backtrace::__rust_end_short_backtrace::hd138d2032731ed21
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x56112fca7aa9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x56112fc82061 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x56112fc81f53 - core::option::expect_failed::h52daa91c8ef676fe
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/core/src/option.rs:1243:5
[INFO] [stderr]     16:     0x56112fc828d3 - core::option::Option<T>::expect::h11d6f4263b81ffeb
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/core/src/option.rs:351:21
[INFO] [stderr]     17:     0x56112fc829c0 - build_script_build::link_in_llvm::h0c32f3408fee0ee6
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:16:20
[INFO] [stderr]     18:     0x56112fc83486 - build_script_build::main::he953277240d23376
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:79:5
[INFO] [stderr]     19:     0x56112fc836fb - core::ops::function::FnOnce::call_once::h10dbb902db6a3368
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x56112fc8365e - std::sys_common::backtrace::__rust_begin_short_backtrace::hdfda07043eba95d0
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x56112fc83511 - std::rt::lang_start::{{closure}}::he0a9e73f74bc51e0
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/rt.rs:49:18
[INFO] [stderr]     22:     0x56112fca8569 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd933294140eb11aa
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x56112fca8569 - std::panicking::try::do_call::h8342fe3d9218b807
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:401:40
[INFO] [stderr]     24:     0x56112fca8569 - std::panicking::try::hcbd73d6d0d58a8f0
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panicking.rs:365:19
[INFO] [stderr]     25:     0x56112fca8569 - std::panic::catch_unwind::hde9cf73f810acfcc
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/panic.rs:434:14
[INFO] [stderr]     26:     0x56112fca8569 - std::rt::lang_start_internal::heb39e7ea6e5d6f6f
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/rt.rs:34:21
[INFO] [stderr]     27:     0x56112fc834f0 - std::rt::lang_start::h97c10d57e00a9e04
[INFO] [stderr]                                  at /rustc/8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346/library/std/src/rt.rs:48:5
[INFO] [stderr]     28:     0x56112fc834ac - main
[INFO] [stderr]     29:     0x7fec64ef40b3 - __libc_start_main
[INFO] [stderr]     30:     0x56112fc827be - _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" "06e1b42b4c30966c96dfe9d831e06f05c1aade35e16c9a0f8e4cf6cdf891f426", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e1b42b4c30966c96dfe9d831e06f05c1aade35e16c9a0f8e4cf6cdf891f426", kill_on_drop: false }`
[INFO] [stdout] 06e1b42b4c30966c96dfe9d831e06f05c1aade35e16c9a0f8e4cf6cdf891f426