[INFO] crate avr-libc 0.1.3 is already in cache
[INFO] extracting crate avr-libc 0.1.3 into work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/avr-libc/0.1.3
[INFO] extracting crate avr-libc 0.1.3 into work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/avr-libc/0.1.3
[INFO] validating manifest of avr-libc-0.1.3 on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of avr-libc-0.1.3 on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-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-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/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-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/avr-libc/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking avr-libc-0.1.3 against master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-2/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/avr-libc/0.1.3:/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=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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7c0a76c3d732b68c5ddce3f7fe522bbd6dec993131a56adecfefdc35fdec303e
[INFO] running `"docker" "start" "-a" "7c0a76c3d732b68c5ddce3f7fe522bbd6dec993131a56adecfefdc35fdec303e"`
[INFO] [stderr]    Compiling xml-rs v0.4.1
[INFO] [stderr]    Compiling xmltree v0.4.0
[INFO] [stderr]    Compiling avr-mcu v0.2.6
[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-5ced41b84034a349/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:     0x558f1039995b - backtrace::backtrace::libunwind::trace::h399a7a5a1c92b2d8
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x558f1039995b - backtrace::backtrace::trace_unsynchronized::h76e29b9231dd0873
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x558f1039995b - std::sys_common::backtrace::_print::hb092bf553e068953
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x558f1039995b - std::sys_common::backtrace::print::h3407b08071f3f520
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x558f1039995b - std::panicking::default_hook::{{closure}}::hc3b8cf51c83ab26e
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x558f10399637 - std::panicking::default_hook::h54ef93848f2476c8
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x558f1039a0d0 - std::panicking::rust_panic_with_hook::hf0df85aa51810823
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x558f102d23b8 - std::panicking::begin_panic::h6cd4412742e33202
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x558f0fce90d2 - build_script_build::bootstrap::hf1b2d0ef69ec4e5e
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:77
[INFO] [stderr]    9:     0x558f0fce8c3a - build_script_build::main::h93f4d259c5cd8bf2
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:54
[INFO] [stderr]   10:     0x558f0fcebeb0 - std::rt::lang_start::{{closure}}::h09a1afda158a558b
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/rt.rs:64
[INFO] [stderr]   11:     0x558f10399ad3 - std::rt::lang_start_internal::{{closure}}::he78638434283b545
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   12:     0x558f10399ad3 - std::panicking::try::do_call::h355c93ec0a462271
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   13:     0x558f103a170a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   14:     0x558f1039a5dd - std::panicking::try::h3918ed6cf08237ff
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   15:     0x558f1039a5dd - std::panic::catch_unwind::h8b2e693598ba7028
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   16:     0x558f1039a5dd - std::rt::lang_start_internal::h78590588d24f24ba
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   17:     0x558f0fcebe89 - std::rt::lang_start::hb58d451fae0ac390
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/rt.rs:64
[INFO] [stderr]   18:     0x558f0fceaeda - main
[INFO] [stderr]   19:     0x7f8f12b512e1 - __libc_start_main
[INFO] [stderr]   20:     0x558f0fce37ea - _start
[INFO] [stderr]   21:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "7c0a76c3d732b68c5ddce3f7fe522bbd6dec993131a56adecfefdc35fdec303e"`
[INFO] running `"docker" "rm" "-f" "7c0a76c3d732b68c5ddce3f7fe522bbd6dec993131a56adecfefdc35fdec303e"`
[INFO] [stdout] 7c0a76c3d732b68c5ddce3f7fe522bbd6dec993131a56adecfefdc35fdec303e