[INFO] fetching crate core_collections 0.3.20170409...
[INFO] checking core_collections-0.3.20170409 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate core_collections 0.3.20170409 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate core_collections 0.3.20170409 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ba1fafe0e5b79ae980847a2ab392891a00e7b807b6169bb52d74d5d77380a64
[INFO] running `Command { std: "docker" "start" "-a" "4ba1fafe0e5b79ae980847a2ab392891a00e7b807b6169bb52d74d5d77380a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ba1fafe0e5b79ae980847a2ab392891a00e7b807b6169bb52d74d5d77380a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba1fafe0e5b79ae980847a2ab392891a00e7b807b6169bb52d74d5d77380a64", kill_on_drop: false }`
[INFO] [stdout] 4ba1fafe0e5b79ae980847a2ab392891a00e7b807b6169bb52d74d5d77380a64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3b5b0cffab8ffa8ae93502c4a2adc9d35f4ee54a757829cc9c7949410da7f87
[INFO] running `Command { std: "docker" "start" "-a" "a3b5b0cffab8ffa8ae93502c4a2adc9d35f4ee54a757829cc9c7949410da7f87", 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:     0x563a4fd22db6 - std::backtrace_rs::backtrace::libunwind::trace::h841aec340308c59e
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x563a4fd22db6 - std::backtrace_rs::backtrace::trace_unsynchronized::h9dee2676d9d11960
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x563a4fd22db6 - std::sys_common::backtrace::_print_fmt::h2d423a7a89b7862c
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x563a4fd22db6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb83a544cb08b68f3
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x563a4fd43e2c - core::fmt::rt::Argument::fmt::hc1d14d10bb089188
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x563a4fd43e2c - core::fmt::write::hfe45f0b918fcb7f8
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x563a4fd20b5f - std::io::Write::write_fmt::hafff8b00df89bf98
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/io/mod.rs:1846:15
[INFO] [stderr]      7:     0x563a4fd22b64 - std::sys_common::backtrace::_print::h847ae15a622b4882
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x563a4fd22b64 - std::sys_common::backtrace::print::h708afa8c696ce578
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x563a4fd2404b - std::panicking::default_hook::{{closure}}::h9f7cf46c599f7ff3
[INFO] [stderr]     10:     0x563a4fd23da7 - std::panicking::default_hook::h3287a62f5d2ae67a
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x563a4fd244ed - std::panicking::rust_panic_with_hook::hb88eafc3660b8bff
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x563a4fd243c2 - std::panicking::begin_panic_handler::{{closure}}::h6507929c0772d453
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x563a4fd23296 - std::sys_common::backtrace::__rust_end_short_backtrace::h89ad0278467b1bd2
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x563a4fd240f4 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x563a4fcebfe5 - core::panicking::panic_fmt::hce2350285af4cdca
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x563a4fd43401 - core::panicking::panic_display::hbc2bf30ac227eddf
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/panicking.rs:196:5
[INFO] [stderr]     17:     0x563a4fcebfab - core::panicking::panic_str::h1faadc5c564df3ec
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/panicking.rs:171:5
[INFO] [stderr]     18:     0x563a4fcebfab - core::option::expect_failed::h4581794544acbf49
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/option.rs:1995:5
[INFO] [stderr]     19:     0x563a4fceda2a - core::option::Option<T>::expect::h3ef6c3203f4d5d71
[INFO] [stderr]     20:     0x563a4fcf4972 - build_script_build::main::h4ec1f4f468b0f02b
[INFO] [stderr]     21:     0x563a4fced573 - core::ops::function::FnOnce::call_once::ha3ad507e56ea80cb
[INFO] [stderr]     22:     0x563a4fcec786 - std::sys_common::backtrace::__rust_begin_short_backtrace::h9c69197f4530247a
[INFO] [stderr]     23:     0x563a4fcecf59 - std::rt::lang_start::{{closure}}::hf2ad0e688b1ea6bf
[INFO] [stderr]     24:     0x563a4fd1d893 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hea0299f39373341f
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     25:     0x563a4fd1d893 - std::panicking::try::do_call::h0cd3430abeddc4e2
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:552:40
[INFO] [stderr]     26:     0x563a4fd1d893 - std::panicking::try::h1b6d10b095200de8
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:516:19
[INFO] [stderr]     27:     0x563a4fd1d893 - std::panic::catch_unwind::h39fde36d17186f03
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panic.rs:146:14
[INFO] [stderr]     28:     0x563a4fd1d893 - std::rt::lang_start_internal::{{closure}}::hdffbc47fb787c567
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/rt.rs:148:48
[INFO] [stderr]     29:     0x563a4fd1d893 - std::panicking::try::do_call::h8261032ff252bd66
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:552:40
[INFO] [stderr]     30:     0x563a4fd1d893 - std::panicking::try::hfa26d7ee0ada6340
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:516:19
[INFO] [stderr]     31:     0x563a4fd1d893 - std::panic::catch_unwind::h94fb8e4675a04827
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panic.rs:146:14
[INFO] [stderr]     32:     0x563a4fd1d893 - std::rt::lang_start_internal::h86a38ee89c760c9f
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/rt.rs:148:20
[INFO] [stderr]     33:     0x563a4fcecf37 - std::rt::lang_start::h21ab48e0b05a6cc9
[INFO] [stderr]     34:     0x563a4fcf5495 - main
[INFO] [stderr]     35:     0x7ff7b0541d90 - <unknown>
[INFO] [stderr]     36:     0x7ff7b0541e40 - __libc_start_main
[INFO] [stderr]     37:     0x563a4fcec6b5 - _start
[INFO] [stderr]     38:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "a3b5b0cffab8ffa8ae93502c4a2adc9d35f4ee54a757829cc9c7949410da7f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b5b0cffab8ffa8ae93502c4a2adc9d35f4ee54a757829cc9c7949410da7f87", kill_on_drop: false }`
[INFO] [stdout] a3b5b0cffab8ffa8ae93502c4a2adc9d35f4ee54a757829cc9c7949410da7f87
