[INFO] fetching crate flutter-engine-sys 0.3.5...
[INFO] checking flutter-engine-sys-0.3.5 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate flutter-engine-sys 0.3.5 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate flutter-engine-sys 0.3.5 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 flutter-engine-sys 0.3.5
[INFO] finished tweaking crates.io crate flutter-engine-sys 0.3.5
[INFO] tweaked toml for crates.io crate flutter-engine-sys 0.3.5 written to /workspace/builds/worker-6-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 zip v0.2.8
[INFO] [stderr]   Downloaded msdos_time v0.1.6
[INFO] [stderr]   Downloaded flutter-download v0.3.5
[INFO] [stderr]   Downloaded transformation-pipeline v0.1.0
[INFO] [stderr]   Downloaded cexpr v0.3.6
[INFO] [stderr]   Downloaded podio v0.1.7
[INFO] [stderr]   Downloaded unzip v0.1.0
[INFO] [stderr]   Downloaded bzip2 v0.3.3
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.9+1.58.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4808cc42b3813b51fa5ffc26d80249ccc562bdb522961fd418f4fe1b9795fc34
[INFO] running `Command { std: "docker" "start" "-a" "4808cc42b3813b51fa5ffc26d80249ccc562bdb522961fd418f4fe1b9795fc34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4808cc42b3813b51fa5ffc26d80249ccc562bdb522961fd418f4fe1b9795fc34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4808cc42b3813b51fa5ffc26d80249ccc562bdb522961fd418f4fe1b9795fc34", kill_on_drop: false }`
[INFO] [stdout] 4808cc42b3813b51fa5ffc26d80249ccc562bdb522961fd418f4fe1b9795fc34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 48f276fc03e035dd0393f3df1deccc6c1b52818c7abe113fe26fc2f6dc3ef095
[INFO] running `Command { std: "docker" "start" "-a" "48f276fc03e035dd0393f3df1deccc6c1b52818c7abe113fe26fc2f6dc3ef095", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling openssl-sys v0.9.101
[INFO] [stderr]    Compiling libz-sys v1.1.15
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling curl v0.4.46
[INFO] [stderr]    Compiling podio v0.1.7
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling zip v0.2.8
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling transformation-pipeline v0.1.0
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling unzip v0.1.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling flutter-download v0.3.5
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling flutter-engine-sys v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `flutter-engine-sys v0.3.5 (/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/flutter-engine-sys-c1e358af4edb707b/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the custom toolchain 'b0696a5160711c068cb1f01b7437db7990d15750'.
[INFO] [stderr]   note: this is a custom toolchain, which cannot use `rustup component add`
[INFO] [stderr]   help: if you built this toolchain from source, and used `rustup toolchain link`, then you may be able to build the component with `x.py`
[INFO] [stderr]   Failed to run rustfmt: Internal rustfmt error (non-fatal, continuing)
[INFO] [stderr]   thread 'main' panicked at build.rs:58:41:
[INFO] [stderr]   Cannot get flutter engine version: InvalidFlutterRoot("output empty")
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55965932fc86 - 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:     0x55965932fc86 - 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:     0x55965932fc86 - std::sys_common::backtrace::_print_fmt::h2d423a7a89b7862c
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55965932fc86 - <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:     0x559659358b8c - core::fmt::rt::Argument::fmt::hc1d14d10bb089188
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x559659358b8c - core::fmt::write::hfe45f0b918fcb7f8
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x55965932d3cf - std::io::Write::write_fmt::hafff8b00df89bf98
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/io/mod.rs:1846:15
[INFO] [stderr]      7:     0x55965932fa34 - std::sys_common::backtrace::_print::h847ae15a622b4882
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55965932fa34 - std::sys_common::backtrace::print::h708afa8c696ce578
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55965933107b - std::panicking::default_hook::{{closure}}::h9f7cf46c599f7ff3
[INFO] [stderr]     10:     0x559659330dd7 - std::panicking::default_hook::h3287a62f5d2ae67a
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x55965933151d - std::panicking::rust_panic_with_hook::hb88eafc3660b8bff
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x5596593313f2 - std::panicking::begin_panic_handler::{{closure}}::h6507929c0772d453
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x559659330166 - 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:     0x559659331124 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x559658dd9955 - core::panicking::panic_fmt::hce2350285af4cdca
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x559658dd9f33 - core::result::unwrap_failed::h03f5763b044b0d45
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/result.rs:1654:5
[INFO] [stderr]     17:     0x559658ddfcdc - core::result::Result<T,E>::expect::h9e4955e1054ee202
[INFO] [stderr]     18:     0x559658de10dc - build_script_build::main::h54ae3e4418229f3a
[INFO] [stderr]     19:     0x559658dddce3 - core::ops::function::FnOnce::call_once::h5c2db1428e19665d
[INFO] [stderr]     20:     0x559658dda1c6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h02ad4eb2d7ac807a
[INFO] [stderr]     21:     0x559658ddaa69 - std::rt::lang_start::{{closure}}::h3c4b561cb0e84170
[INFO] [stderr]     22:     0x559659328293 - 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]     23:     0x559659328293 - std::panicking::try::do_call::h0cd3430abeddc4e2
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:552:40
[INFO] [stderr]     24:     0x559659328293 - std::panicking::try::h1b6d10b095200de8
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:516:19
[INFO] [stderr]     25:     0x559659328293 - std::panic::catch_unwind::h39fde36d17186f03
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panic.rs:146:14
[INFO] [stderr]     26:     0x559659328293 - std::rt::lang_start_internal::{{closure}}::hdffbc47fb787c567
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/rt.rs:148:48
[INFO] [stderr]     27:     0x559659328293 - std::panicking::try::do_call::h8261032ff252bd66
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:552:40
[INFO] [stderr]     28:     0x559659328293 - std::panicking::try::hfa26d7ee0ada6340
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panicking.rs:516:19
[INFO] [stderr]     29:     0x559659328293 - std::panic::catch_unwind::h94fb8e4675a04827
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/panic.rs:146:14
[INFO] [stderr]     30:     0x559659328293 - std::rt::lang_start_internal::h86a38ee89c760c9f
[INFO] [stderr]                                  at /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/rt.rs:148:20
[INFO] [stderr]     31:     0x559658ddaa47 - std::rt::lang_start::hb2e99b4b26573bd0
[INFO] [stderr]     32:     0x559658de1db5 - main
[INFO] [stderr]     33:     0x7fe328954d90 - <unknown>
[INFO] [stderr]     34:     0x7fe328954e40 - __libc_start_main
[INFO] [stderr]     35:     0x559658dda0f5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "48f276fc03e035dd0393f3df1deccc6c1b52818c7abe113fe26fc2f6dc3ef095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48f276fc03e035dd0393f3df1deccc6c1b52818c7abe113fe26fc2f6dc3ef095", kill_on_drop: false }`
[INFO] [stdout] 48f276fc03e035dd0393f3df1deccc6c1b52818c7abe113fe26fc2f6dc3ef095
