[INFO] fetching crate core_collections 0.3.20170409...
[INFO] checking core_collections-0.3.20170409 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate core_collections 0.3.20170409 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate core_collections 0.3.20170409 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core_collections 0.3.20170409
[INFO] finished tweaking crates.io crate core_collections 0.3.20170409
[INFO] tweaked toml for crates.io crate core_collections 0.3.20170409 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1363ee4e5994f7c9e27bcfe2b77e6fcb1c95228a231183719d1cf54925ec4cc
[INFO] running `Command { std: "docker" "start" "-a" "c1363ee4e5994f7c9e27bcfe2b77e6fcb1c95228a231183719d1cf54925ec4cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1363ee4e5994f7c9e27bcfe2b77e6fcb1c95228a231183719d1cf54925ec4cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1363ee4e5994f7c9e27bcfe2b77e6fcb1c95228a231183719d1cf54925ec4cc", kill_on_drop: false }`
[INFO] [stdout] c1363ee4e5994f7c9e27bcfe2b77e6fcb1c95228a231183719d1cf54925ec4cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae913df4b851f9ea1cb2b980d26fe7b24ee9fb9c41791300d8ebbd8706bb3504
[INFO] running `Command { std: "docker" "start" "-a" "ae913df4b851f9ea1cb2b980d26fe7b24ee9fb9c41791300d8ebbd8706bb3504", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling core_collections v0.3.20170409 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `core_collections v0.3.20170409 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/core_collections-dff12b738b264ef4/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at build.rs:48:69:
[INFO] [stderr]   Unknown compiler version, upgrade core_collections?
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55c1fc004fa6 - std::backtrace_rs::backtrace::libunwind::trace::h08f7dc827584a7ad
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x55c1fc004fa6 - std::backtrace_rs::backtrace::trace_unsynchronized::h4497bfae4461b22b
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55c1fc004fa6 - std::sys_common::backtrace::_print_fmt::h6b3942d598b9c6f0
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55c1fc004fa6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3a306296c8ab625c
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55c1fc027240 - core::fmt::rt::Argument::fmt::h0b9d84e172c4f894
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x55c1fc027240 - core::fmt::write::h64b64fc2d2167832
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x55c1fc002d8f - std::io::Write::write_fmt::h93eeb18ca56ab61e
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/io/mod.rs:1810:15
[INFO] [stderr]      7:     0x55c1fc004d84 - std::sys_common::backtrace::_print::hd3f3194a71c6769a
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55c1fc004d84 - std::sys_common::backtrace::print::heffb248ee274206b
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55c1fc0062e7 - std::panicking::default_hook::{{closure}}::h58655f381931db29
[INFO] [stderr]     10:     0x55c1fc006049 - std::panicking::default_hook::h0b1c1ae801593404
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x55c1fc006778 - std::panicking::rust_panic_with_hook::h83880c09c2fb14e4
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:781:13
[INFO] [stderr]     12:     0x55c1fc006652 - std::panicking::begin_panic_handler::{{closure}}::hb017100a7be0020a
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:659:13
[INFO] [stderr]     13:     0x55c1fc0054a6 - std::sys_common::backtrace::__rust_end_short_backtrace::hefda6bb3e2a65163
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55c1fc0063a4 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:647:5
[INFO] [stderr]     15:     0x55c1fbfcf1f5 - core::panicking::panic_fmt::h639ac9ebcc4cc09e
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x55c1fbfcf1b3 - core::panicking::panic_display::h3fc0031ac1e22cbd
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/panicking.rs:196:5
[INFO] [stderr]     17:     0x55c1fbfcf1b3 - core::panicking::panic_str::h2dcf1340028e826c
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/panicking.rs:171:5
[INFO] [stderr]     18:     0x55c1fbfcf1b3 - core::option::expect_failed::hc24141a56f82d5a0
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/option.rs:1988:5
[INFO] [stderr]     19:     0x55c1fbfd0aca - core::option::Option<T>::expect::h485694c3ded0d6cc
[INFO] [stderr]     20:     0x55c1fbfd7ac2 - build_script_build::main::h6029bff2766ceb59
[INFO] [stderr]     21:     0x55c1fbfd0753 - core::ops::function::FnOnce::call_once::h2ac45506c2e34c7c
[INFO] [stderr]     22:     0x55c1fbfcfae6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h22b5c6c8dd921a5f
[INFO] [stderr]     23:     0x55c1fbfd0319 - std::rt::lang_start::{{closure}}::hf2b78c85ab74d6c4
[INFO] [stderr]     24:     0x55c1fbfff6c1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5fd52db904d6eae8
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     25:     0x55c1fbfff6c1 - std::panicking::try::do_call::he369ba628d7c9d4a
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:554:40
[INFO] [stderr]     26:     0x55c1fbfff6c1 - std::panicking::try::h3e7a1367a7809b8e
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:518:19
[INFO] [stderr]     27:     0x55c1fbfff6c1 - std::panic::catch_unwind::hf5ed2fafa73782ba
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panic.rs:142:14
[INFO] [stderr]     28:     0x55c1fbfff6c1 - std::rt::lang_start_internal::{{closure}}::h48a173881681ffd2
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/rt.rs:148:48
[INFO] [stderr]     29:     0x55c1fbfff6c1 - std::panicking::try::do_call::hde037f5e624d8646
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:554:40
[INFO] [stderr]     30:     0x55c1fbfff6c1 - std::panicking::try::h6cf0e777ffa0cfac
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panicking.rs:518:19
[INFO] [stderr]     31:     0x55c1fbfff6c1 - std::panic::catch_unwind::hfa79f85f27c41b17
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/panic.rs:142:14
[INFO] [stderr]     32:     0x55c1fbfff6c1 - std::rt::lang_start_internal::h756905bc8f8b5b00
[INFO] [stderr]                                  at /rustc/5518eaa946291f00471af8b254b2a1715f234882/library/std/src/rt.rs:148:20
[INFO] [stderr]     33:     0x55c1fbfd02f7 - std::rt::lang_start::hf1dd52b1dda273a9
[INFO] [stderr]     34:     0x55c1fbfd85e5 - main
[INFO] [stderr]     35:     0x7f4cb89a4d90 - <unknown>
[INFO] [stderr]     36:     0x7f4cb89a4e40 - __libc_start_main
[INFO] [stderr]     37:     0x55c1fbfcfa15 - _start
[INFO] [stderr]     38:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "ae913df4b851f9ea1cb2b980d26fe7b24ee9fb9c41791300d8ebbd8706bb3504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae913df4b851f9ea1cb2b980d26fe7b24ee9fb9c41791300d8ebbd8706bb3504", kill_on_drop: false }`
[INFO] [stdout] ae913df4b851f9ea1cb2b980d26fe7b24ee9fb9c41791300d8ebbd8706bb3504
