[INFO] fetching crate avr-libc 0.1.3...
[INFO] extracting crate avr-libc 0.1.3 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/avr-libc/0.1.3
[INFO] extracting crate avr-libc 0.1.3 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/avr-libc/0.1.3
[INFO] validating manifest of avr-libc-0.1.3 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of avr-libc-0.1.3 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing avr-libc-0.1.3
[INFO] finished frobbing avr-libc-0.1.3
[INFO] frobbed toml for avr-libc-0.1.3 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/avr-libc/0.1.3/Cargo.toml
[INFO] started frobbing avr-libc-0.1.3
[INFO] finished frobbing avr-libc-0.1.3
[INFO] frobbed toml for avr-libc-0.1.3 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/avr-libc/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking avr-libc-0.1.3 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/avr-libc/0.1.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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=forbid" "-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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f0c471563a50474e5336bc383b3cd8e0d954a5c4372d75d2f9a548fe8f8fbc12
[INFO] running `"docker" "start" "-a" "f0c471563a50474e5336bc383b3cd8e0d954a5c4372d75d2f9a548fe8f8fbc12"`
[INFO] [stderr]    Compiling avr-libc v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `avr-libc v0.1.3 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/avr-libc-19f86de74093251f/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] cargo:warning=not targeting a specific microcontroller, create a custom target specification to enable mcu-specific functionality
[INFO] [stderr] avr-libc not yet built for 'avr2', building now
[INFO] [stderr] Bootstrapping avr-libc
[INFO] [stderr] "sh" "bootstrap"
[INFO] [stderr] Generating source directories:
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] + rm -rf avr/lib
[INFO] [stderr] + ./devtools/gen-avr-lib-tree.sh
[INFO] [stderr] mkdir: cannot create directory 'avr': Read-only file system
[INFO] [stderr] mkdir: cannot create directory 'avr/lib': No such file or directory
[INFO] [stderr] ./devtools/gen-avr-lib-tree.sh: 414: cd: can't cd to avr/lib
[INFO] [stderr] + rm -rf autom4te.cache
[INFO] [stderr] + aclocal
[INFO] [stderr] autom4te: cannot create autom4te.cache: No such file or directory
[INFO] [stderr] aclocal: error: echo failed with exit status: 1
[INFO] [stderr] + autoheader
[INFO] [stderr] autom4te: cannot create autom4te.cache: No such file or directory
[INFO] [stderr] autoheader: '/usr/bin/autom4te' failed with exit status: 1
[INFO] [stderr] + autoconf
[INFO] [stderr] autom4te: cannot create autom4te.cache: No such file or directory
[INFO] [stderr] + automake --foreign --add-missing --copy
[INFO] [stderr] autom4te: cannot create autom4te.cache: No such file or directory
[INFO] [stderr] automake: error: autoconf failed with exit status: 1
[INFO] [stderr] thread 'main' panicked at 'failed to bootstrap', build.rs:77:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55e5c9ccfa8b - backtrace::backtrace::libunwind::trace::h8758853b907b30fd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55e5c9ccfa8b - backtrace::backtrace::trace_unsynchronized::h979d07d4bfdce29c
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55e5c9ccfa8b - std::sys_common::backtrace::_print::ha749bbdb811617ea
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55e5c9ccfa8b - std::sys_common::backtrace::print::h86a6ff63a904e869
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55e5c9ccfa8b - std::panicking::default_hook::{{closure}}::h68500b20afb715b9
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55e5c9ccf767 - std::panicking::default_hook::ha801ade4ae33c264
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55e5c9cd0200 - std::panicking::rust_panic_with_hook::hfb51b615c6060100
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55e5c9c3ab88 - std::panicking::begin_panic::h0454c744bd2fe550
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x55e5c9621462 - build_script_build::bootstrap::h9bedca53babcf399
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:77
[INFO] [stderr]    9:     0x55e5c9620fca - build_script_build::main::he16518b03c02f9dc
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:54
[INFO] [stderr]   10:     0x55e5c96241f0 - std::rt::lang_start::{{closure}}::h464897231211ae6c
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/rt.rs:64
[INFO] [stderr]   11:     0x55e5c9ccfc03 - std::rt::lang_start_internal::{{closure}}::h25858f7dd6124e1a
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   12:     0x55e5c9ccfc03 - std::panicking::try::do_call::h51cc84caa9338daf
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   13:     0x55e5c9cd783a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   14:     0x55e5c9cd070d - std::panicking::try::heb9d5da34e3fa707
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   15:     0x55e5c9cd070d - std::panic::catch_unwind::he2a2041733180f4c
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   16:     0x55e5c9cd070d - std::rt::lang_start_internal::h9e24cef029766dfd
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   17:     0x55e5c96241c9 - std::rt::lang_start::h3f4d3b0445a9701f
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/rt.rs:64
[INFO] [stderr]   18:     0x55e5c962326a - main
[INFO] [stderr]   19:     0x7f2d4e25d2e1 - __libc_start_main
[INFO] [stderr]   20:     0x55e5c961bb7a - _start
[INFO] [stderr]   21:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "f0c471563a50474e5336bc383b3cd8e0d954a5c4372d75d2f9a548fe8f8fbc12"`
[INFO] running `"docker" "rm" "-f" "f0c471563a50474e5336bc383b3cd8e0d954a5c4372d75d2f9a548fe8f8fbc12"`
[INFO] [stdout] f0c471563a50474e5336bc383b3cd8e0d954a5c4372d75d2f9a548fe8f8fbc12