[INFO] updating cached repository denoland/cargo_gn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/denoland/cargo_gn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/denoland/cargo_gn" "work/ex/beta-1.37-6/sources/1.36.0/gh/denoland/cargo_gn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/denoland/cargo_gn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/denoland/cargo_gn" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/denoland/cargo_gn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/denoland/cargo_gn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bb5c0748e4435381c5b2e52e8bc6c633f51a4d69
[INFO] sha for GitHub repo denoland/cargo_gn: bb5c0748e4435381c5b2e52e8bc6c633f51a4d69
[INFO] validating manifest of denoland/cargo_gn on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of denoland/cargo_gn on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing denoland/cargo_gn
[INFO] removed workspace from denoland/cargo_gn
[INFO] finished frobbing denoland/cargo_gn
[INFO] frobbed toml for denoland/cargo_gn written to work/ex/beta-1.37-6/sources/1.36.0/gh/denoland/cargo_gn/Cargo.toml
[INFO] started frobbing denoland/cargo_gn
[INFO] removed workspace from denoland/cargo_gn
[INFO] finished frobbing denoland/cargo_gn
[INFO] frobbed toml for denoland/cargo_gn written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/denoland/cargo_gn/Cargo.toml
[INFO] crate denoland/cargo_gn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing denoland/cargo_gn against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/denoland/cargo_gn:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 57fc7b5f5587f8d834139785da1a98e772e3ee570c01ed67e05b5782c7809148
[INFO] running `"docker" "start" "-a" "57fc7b5f5587f8d834139785da1a98e772e3ee570c01ed67e05b5782c7809148"`
[INFO] [stderr]    Compiling cargo_gn v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `cargo_gn v0.0.5 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/cargo_gn-d8c6a1dbc3d52e6f/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] python: can't open file '/opt/crater/workdir/ninja/configure.py': [Errno 2] No such file or directory
[INFO] [stderr] thread 'main' panicked at 'assertion failed: status.success()', build.rs:30:3
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55f4378d2a7b - backtrace::backtrace::libunwind::trace::h5dfa5d4c5feed6dc
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55f4378d2a7b - backtrace::backtrace::trace_unsynchronized::hb731fe64f3fa469f
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55f4378d2a7b - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55f4378d2a7b - std::sys_common::backtrace::print::h31646c3786c57441
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55f4378d2a7b - std::panicking::default_hook::{{closure}}::hda785e768c746ae7
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55f4378d2757 - std::panicking::default_hook::h0c4b76f338614ef1
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55f4378d3140 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55f4378c4764 - std::panicking::begin_panic::h67d82f5d78aca7c5
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x55f4378acba0 - build_script_build::build_ninja::hb724e5e18d94f088
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:30
[INFO] [stderr]    9:     0x55f4378ac7fa - build_script_build::main::ha476dcb43cba9a2d
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:12
[INFO] [stderr]   10:     0x55f4378afcd0 - std::rt::lang_start::{{closure}}::h3ba84bb19ddadd28
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64
[INFO] [stderr]   11:     0x55f4378d2b93 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   12:     0x55f4378d2b93 - std::panicking::try::do_call::h480cafa68c9928b4
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   13:     0x55f4378da02a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   14:     0x55f4378d364d - std::panicking::try::he0549d0299de204a
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   15:     0x55f4378d364d - std::panic::catch_unwind::h422dc2db98f03517
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   16:     0x55f4378d364d - std::rt::lang_start_internal::h121de03325a3f900
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   17:     0x55f4378afca9 - std::rt::lang_start::h16df075333f5206d
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64
[INFO] [stderr]   18:     0x55f4378ad77a - main
[INFO] [stderr]   19:     0x7f5b1b5a02e1 - __libc_start_main
[INFO] [stderr]   20:     0x55f4378a6d6a - _start
[INFO] [stderr]   21:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "57fc7b5f5587f8d834139785da1a98e772e3ee570c01ed67e05b5782c7809148"`
[INFO] running `"docker" "rm" "-f" "57fc7b5f5587f8d834139785da1a98e772e3ee570c01ed67e05b5782c7809148"`
[INFO] [stdout] 57fc7b5f5587f8d834139785da1a98e772e3ee570c01ed67e05b5782c7809148