[INFO] crate rustdemo 0.1.0 is already in cache
[INFO] extracting crate rustdemo 0.1.0 into work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/rustdemo/0.1.0
[INFO] extracting crate rustdemo 0.1.0 into work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/rustdemo/0.1.0
[INFO] validating manifest of rustdemo-0.1.0 on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rustdemo-0.1.0 on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rustdemo-0.1.0
[INFO] finished frobbing rustdemo-0.1.0
[INFO] frobbed toml for rustdemo-0.1.0 written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/rustdemo/0.1.0/Cargo.toml
[INFO] started frobbing rustdemo-0.1.0
[INFO] finished frobbing rustdemo-0.1.0
[INFO] frobbed toml for rustdemo-0.1.0 written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/rustdemo/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rustdemo-0.1.0 against master#1891bfa80364eead426517c68de6947b7692e2de for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-5/master#1891bfa80364eead426517c68de6947b7692e2de:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/rustdemo/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=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" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dd8d2ff46cb1b2bf8fd2bbcfe580cbe32b9030f6d7f81d07e51f657f0545a140
[INFO] running `"docker" "start" "-a" "dd8d2ff46cb1b2bf8fd2bbcfe580cbe32b9030f6d7f81d07e51f657f0545a140"`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling rustdemo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `rustdemo v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/rustdemo-eccaf8419710876c/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:     0x55e153947d43 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hf442c630213d5c0e
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x55e153943b9b - std::sys_common::backtrace::_print::h1f9138ed6351d2a8
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x55e153946bd6 - std::panicking::default_hook::{{closure}}::he2d7aa18e306aa14
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:197
[INFO] [stderr]    3:     0x55e153946969 - std::panicking::default_hook::he86a971ed90f2b8f
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x55e15394722f - std::panicking::rust_panic_with_hook::h8e0ec1fb63564a4a
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x55e153946db1 - std::panicking::continue_panic_fmt::h5758ee73634469f4
[INFO] [stderr]                                at src/libstd/panicking.rs:381
[INFO] [stderr]    6:     0x55e153946c95 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:308
[INFO] [stderr]    7:     0x55e15395785c - core::panicking::panic_fmt::h6452504f8f87dea7
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]    8:     0x55e153933906 - core::result::unwrap_failed::hf06b9915135db373
[INFO] [stderr]                                at /rustc/1891bfa80364eead426517c68de6947b7692e2de/src/libcore/macros.rs:18
[INFO] [stderr]    9:     0x55e1539339b6 - core::result::Result<T,E>::unwrap::h076effe1e3ae620a
[INFO] [stderr]                                at /rustc/1891bfa80364eead426517c68de6947b7692e2de/src/libcore/result.rs:800
[INFO] [stderr]   10:     0x55e153932f5b - build_script_build::main::h10156141d30423fd
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:9
[INFO] [stderr]   11:     0x55e15393374f - std::rt::lang_start::{{closure}}::h7595fab6279f6840
[INFO] [stderr]                                at /rustc/1891bfa80364eead426517c68de6947b7692e2de/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x55e153946c82 - std::panicking::try::do_call::h7aa8c4760020085d
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:293
[INFO] [stderr]   13:     0x55e153948fa9 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   14:     0x55e15394773c - std::rt::lang_start_internal::hecae08ecaa28013a
[INFO] [stderr]                                at src/libstd/panicking.rs:272
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   15:     0x55e153933728 - std::rt::lang_start::h3cb9fbef18ffaa38
[INFO] [stderr]                                at /rustc/1891bfa80364eead426517c68de6947b7692e2de/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x55e1539331d9 - main
[INFO] [stderr]   17:     0x7f4f9a6ed2e0 - __libc_start_main
[INFO] [stderr]   18:     0x55e153932ca9 - _start
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "dd8d2ff46cb1b2bf8fd2bbcfe580cbe32b9030f6d7f81d07e51f657f0545a140"`
[INFO] running `"docker" "rm" "-f" "dd8d2ff46cb1b2bf8fd2bbcfe580cbe32b9030f6d7f81d07e51f657f0545a140"`
[INFO] [stdout] dd8d2ff46cb1b2bf8fd2bbcfe580cbe32b9030f6d7f81d07e51f657f0545a140