[INFO] fetching crate rustpython 0.1.0... [INFO] extracting crate rustpython 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/rustpython/0.1.0 [INFO] extracting crate rustpython 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rustpython/0.1.0 [INFO] validating manifest of rustpython-0.1.0 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 rustpython-0.1.0 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 rustpython-0.1.0 [INFO] finished frobbing rustpython-0.1.0 [INFO] frobbed toml for rustpython-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/rustpython/0.1.0/Cargo.toml [INFO] started frobbing rustpython-0.1.0 [INFO] finished frobbing rustpython-0.1.0 [INFO] frobbed toml for rustpython-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rustpython/0.1.0/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rustpython-vm v0.1.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing rustpython-0.1.0 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-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rustpython/0.1.0:/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] b4b5c7343c3d89e8be7ded16f7220515726fbf2af7de01f54bdb53793242cb50 [INFO] running `"docker" "start" "-a" "b4b5c7343c3d89e8be7ded16f7220515726fbf2af7de01f54bdb53793242cb50"` [INFO] [stderr] Compiling unic-char-range v0.9.0 [INFO] [stderr] Compiling wtf8 v0.0.3 [INFO] [stderr] Compiling proc-macro-hack-impl v0.3.3 [INFO] [stderr] Compiling unic-char-basics v0.9.0 [INFO] [stderr] Compiling unic-idna-punycode v0.9.0 [INFO] [stderr] Compiling hexf-parse v0.1.0 [INFO] [stderr] Compiling rustpython-vm v0.1.0 [INFO] [stderr] Compiling unicode_categories v0.1.1 [INFO] [stderr] Compiling unicode-casing v0.1.0 [INFO] [stderr] Compiling unic-char-property v0.9.0 [INFO] [stderr] Compiling ena v0.11.0 [INFO] [stderr] Compiling rustc_version_runtime v0.1.5 [INFO] [stderr] Compiling statrs v0.10.0 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling proc-macro-hack v0.3.3 [INFO] [stderr] Compiling unic-ucd-category v0.9.0 [INFO] [stderr] Compiling unic-emoji-char v0.9.0 [INFO] [stderr] Compiling unic-ucd-case v0.9.0 [INFO] [stderr] Compiling unic-idna-mapping v0.9.0 [INFO] [stderr] Compiling unic-ucd-bidi v0.9.0 [INFO] [stderr] Compiling unic-ucd-name_aliases v0.9.0 [INFO] [stderr] Compiling unic-ucd-ident v0.9.0 [INFO] [stderr] Compiling unic-ucd-common v0.9.0 [INFO] [stderr] Compiling unic-ucd-block v0.9.0 [INFO] [stderr] Compiling unic-ucd-age v0.9.0 [INFO] [stderr] Compiling unic-ucd-name v0.9.0 [INFO] [stderr] Compiling unic-ucd-segment v0.9.0 [INFO] [stderr] Compiling unic-char v0.9.0 [INFO] [stderr] Compiling string_cache_codegen v0.4.2 [INFO] [stderr] Compiling hexf-impl v0.1.0 [INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.5` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/rustc_version_runtime-d4fc00b9e8db29ab/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:999:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55ea4972dbeb - 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: 0x55ea4972dbeb - 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: 0x55ea4972dbeb - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55ea4972dbeb - std::sys_common::backtrace::print::h31646c3786c57441 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55ea4972dbeb - std::panicking::default_hook::{{closure}}::hda785e768c746ae7 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55ea4972d8c7 - std::panicking::default_hook::h0c4b76f338614ef1 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55ea4972e2b0 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55ea4972de32 - std::panicking::continue_panic_fmt::h0046167652be99a6 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55ea4972dd16 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x55ea4974714d - core::panicking::panic_fmt::h8980489a6c4a44cb [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55ea496fcd33 - core::result::unwrap_failed::h0f6a92091fa1fd6c [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x55ea496fd278 - core::result::Result::unwrap::h3764d2b11d868fd4 [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x55ea496fab3b - build_script_build::main::hd64b3b1fa3626287 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27 [INFO] [stderr] 13: 0x55ea496fc300 - std::rt::lang_start::{{closure}}::hb316b982135279cb [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55ea4972dd03 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55ea4972dd03 - std::panicking::try::do_call::h480cafa68c9928b4 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55ea497340ca - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x55ea4972e7bd - std::panicking::try::he0549d0299de204a [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55ea4972e7bd - std::panic::catch_unwind::h422dc2db98f03517 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x55ea4972e7bd - std::rt::lang_start_internal::h121de03325a3f900 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55ea496fc2d9 - std::rt::lang_start::hdebc0264070b2c95 [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55ea496fbb3a - main [INFO] [stderr] 22: 0x7f74eac3a2e1 - __libc_start_main [INFO] [stderr] 23: 0x55ea496fa4ba - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "b4b5c7343c3d89e8be7ded16f7220515726fbf2af7de01f54bdb53793242cb50"` [INFO] running `"docker" "rm" "-f" "b4b5c7343c3d89e8be7ded16f7220515726fbf2af7de01f54bdb53793242cb50"` [INFO] [stdout] b4b5c7343c3d89e8be7ded16f7220515726fbf2af7de01f54bdb53793242cb50