[INFO] cloning repository T0mstone/tlib
[INFO] running `"git" "clone" "--bare" "git://github.com/T0mstone/tlib.git" "work/cache/sources/gh/T0mstone/tlib"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/T0mstone/tlib'...
[INFO] running `"git" "clone" "work/cache/sources/gh/T0mstone/tlib" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/T0mstone/tlib"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/T0mstone/tlib'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/T0mstone/tlib" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/T0mstone/tlib"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/T0mstone/tlib'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3af00e1f4ff8a25f13bbabead988a14eb17c2a59
[INFO] sha for GitHub repo T0mstone/tlib: 3af00e1f4ff8a25f13bbabead988a14eb17c2a59
[INFO] validating manifest of T0mstone/tlib 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 T0mstone/tlib 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 T0mstone/tlib
[INFO] finished frobbing T0mstone/tlib
[INFO] frobbed toml for T0mstone/tlib written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/T0mstone/tlib/Cargo.toml
[INFO] started frobbing T0mstone/tlib
[INFO] finished frobbing T0mstone/tlib
[INFO] frobbed toml for T0mstone/tlib written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/T0mstone/tlib/Cargo.toml
[INFO] crate T0mstone/tlib already has a lockfile, it will not be regenerated
[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 T0mstone/tlib against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/T0mstone/tlib:/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6f6c025b4745445bb09c0ce31f16012567f096aba29b0c070bace152c7345237
[INFO] running `"docker" "start" "-a" "6f6c025b4745445bb09c0ce31f16012567f096aba29b0c070bace152c7345237"`
[INFO] [stderr]    Compiling tlib v0.6.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> build.rs:24:29
[INFO] [stderr]    |
[INFO] [stderr] 24 |         fn join<U: Into<T>>(mut self, delim: U) -> T
[INFO] [stderr]    |                             ----^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `tlib v0.6.1 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/tlib-946993d403107394/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Failed to create file: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:999:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5609b700b31b - backtrace::backtrace::libunwind::trace::h3eb7dec79b0cb248
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5609b700b31b - backtrace::backtrace::trace_unsynchronized::h828522acfd8fecfd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5609b700b31b - std::sys_common::backtrace::_print::ha50329dede3e270e
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x5609b700b31b - std::sys_common::backtrace::print::ha6d7f96740481555
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x5609b700b31b - std::panicking::default_hook::{{closure}}::h48c4812e51e499b0
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x5609b700aff7 - std::panicking::default_hook::h5d25d0fa83093442
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x5609b700b9e0 - std::panicking::rust_panic_with_hook::h1babb2b4ac73106c
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x5609b700b562 - std::panicking::continue_panic_fmt::hb318720956a96dd4
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x5609b700b446 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x5609b702017d - core::panicking::panic_fmt::h78250769f89ff6a0
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x5609b6ff25af - core::result::unwrap_failed::ha38848028441e1fb
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x5609b6ff2e53 - core::result::Result<T,E>::expect::h242c03c0bfa2494f
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libcore/result.rs:827
[INFO] [stderr]   12:     0x5609b7003ffe - build_script_build::write_file::h6d13b53867f4f586
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:167
[INFO] [stderr]   13:     0x5609b7004133 - build_script_build::make_file::h5daf88be860b56ae
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:173
[INFO] [stderr]   14:     0x5609b70041c0 - build_script_build::main::haa3d467c07df8805
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:177
[INFO] [stderr]   15:     0x5609b6ffe120 - std::rt::lang_start::{{closure}}::h98adfffa047e5223
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x5609b700b433 - std::rt::lang_start_internal::{{closure}}::h8302806cea4153ed
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   17:     0x5609b700b433 - std::panicking::try::do_call::hc811096721c4b953
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   18:     0x5609b700d33a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   19:     0x5609b700beed - std::panicking::try::h132c927956f6dad4
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   20:     0x5609b700beed - std::panic::catch_unwind::h2f6ea137782ab73f
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   21:     0x5609b700beed - std::rt::lang_start_internal::h0f27bcf63030d183
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   22:     0x5609b6ffe0f9 - std::rt::lang_start::hb42813aadc14c0dd
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libstd/rt.rs:64
[INFO] [stderr]   23:     0x5609b700422a - main
[INFO] [stderr]   24:     0x7f39898452e1 - __libc_start_main
[INFO] [stderr]   25:     0x5609b6fede4a - _start
[INFO] [stderr]   26:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "6f6c025b4745445bb09c0ce31f16012567f096aba29b0c070bace152c7345237"`
[INFO] running `"docker" "rm" "-f" "6f6c025b4745445bb09c0ce31f16012567f096aba29b0c070bace152c7345237"`
[INFO] [stdout] 6f6c025b4745445bb09c0ce31f16012567f096aba29b0c070bace152c7345237