[INFO] crate mdbook-epub 0.1.0 is already in cache
[INFO] extracting crate mdbook-epub 0.1.0 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/mdbook-epub/0.1.0
[INFO] extracting crate mdbook-epub 0.1.0 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/mdbook-epub/0.1.0
[INFO] validating manifest of mdbook-epub-0.1.0 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mdbook-epub-0.1.0 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mdbook-epub-0.1.0
[INFO] finished frobbing mdbook-epub-0.1.0
[INFO] frobbed toml for mdbook-epub-0.1.0 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/mdbook-epub/0.1.0/Cargo.toml
[INFO] started frobbing mdbook-epub-0.1.0
[INFO] finished frobbing mdbook-epub-0.1.0
[INFO] frobbed toml for mdbook-epub-0.1.0 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/mdbook-epub/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mdbook-epub-0.1.0 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/mdbook-epub/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 47910a3a0a60263c7c8a3be25b1afab8c87e313fd86c3bf6afcbb2e5ee942b2d
[INFO] running `"docker" "start" "-a" "47910a3a0a60263c7c8a3be25b1afab8c87e313fd86c3bf6afcbb2e5ee942b2d"`
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling mustache v0.8.2
[INFO] [stderr]    Compiling structopt v0.1.7
[INFO] [stderr]    Compiling globset v0.2.1
[INFO] [stderr]    Compiling handlebars v0.32.4
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.4
[INFO] [stderr]    Compiling toml-query v0.6.0
[INFO] [stderr]    Compiling crates-io v0.13.0
[INFO] [stderr]    Compiling ignore v0.2.2
[INFO] [stderr]    Compiling git2-curl v0.7.0
[INFO] [stderr]    Compiling epub-builder v0.3.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.8
[INFO] [stderr]    Compiling cargo v0.24.0
[INFO] [stderr]    Compiling inotify v0.6.1
[INFO] [stderr]    Compiling notify v4.0.7
[INFO] [stderr]    Compiling mdbook v0.1.8
[INFO] [stderr]    Compiling mdbook-epub v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `mdbook-epub v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mdbook-epub-2c39062ba8cd8513/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: CargoError(Msg("failed to write /opt/crater/workdir/Cargo.lock"), State { next_error: Some(CargoError(Msg("failed to open: /opt/crater/workdir/Cargo.lock"), State { next_error: Some(Os { code: 30, kind: Other, message: "Read-only file system" }), backtrace: Some(stack backtrace:
[INFO] [stderr]    0: _RNjCsaR8yIphJY8S_11error_chain14make_backtrace (0x557d7adbd98e)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/error-chain-0.11.0/src/lib.rs:616
[INFO] [stderr]    1: _RNrYNjCsaR8yIphJY8S_11error_chain14make_backtraceINuNcNrCsfOXHOjakNhA_4core3ops8function6FnOnceuE9call_onceCsgHx54g9fS40_5cargo (0x557d7a5383c9)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/ops/function.rs:231
[INFO] [stderr]    2: _RINbMNsCsfOXHOjakNhA_4core6optionINcB3_6OptionINzNxCskZeSixylFoE_5alloc4sync3ArcNaNlCsbfEIBwebHU_9backtrace7capture9BacktraceEE7or_elseNjCsaR8yIphJY8S_11error_chain14make_backtraceECsgHx54g9fS40_5cargo (0x557d7a65be12)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/option.rs:714
[INFO] [stderr]    3: _RINkMs2_CsaR8yIphJY8S_11error_chainNhB6_5State3newNxNwNyCsgHx54g9fS40_5cargo4util6errors10CargoErrorEBS_ (0x557d7a6ac0a1)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/error-chain-0.11.0/src/lib.rs:724
[INFO] [stderr]    4: _RNCINcXst_NwNyCsgHx54g9fS40_5cargo4util6errorsINiNyCsfOXHOjakNhA_4core6result6ResultNeNyCs93O65jcFPR3_3std2fs4FileNqNgNxB1o_2io5error5ErrorEINbB8_14CargoResultExtB1k_E9chain_errNCNnMs3_NfBa_5flockNsB2X_10Filesystem4opens_0NaNqCskZeSixylFoE_5alloc6string6StringE0Bc_ (0x557d7a650e09)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/<::error_chain::error_chain::impl_error_chain_processed macros>:143
[INFO] [stderr]    5: _RINyMNyCsfOXHOjakNhA_4core6resultINiB3_6ResultNeNyCs93O65jcFPR3_3std2fs4FileNqNgNxBM_2io5error5ErrorE7map_errNxNwNyCsgHx54g9fS40_5cargo4util6errors10CargoErrorNCINcXst_B1L_Bv_INbB1L_14CargoResultExtBI_E9chain_errNCNnMs3_NfB1N_5flockNsB3w_10Filesystem4opens_0NaNqCskZeSixylFoE_5alloc6string6StringE0EB1P_ (0x557d7a4b81da)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/result.rs:520
[INFO] [stderr]    6: _RINcXst_NwNyCsgHx54g9fS40_5cargo4util6errorsINiNyCsfOXHOjakNhA_4core6result6ResultNeNyCs93O65jcFPR3_3std2fs4FileNqNgNxB1m_2io5error5ErrorEINbB6_14CargoResultExtB1i_E9chain_errNCNnMs3_NfB8_5flockNsB2V_10Filesystem4opens_0NaNqCskZeSixylFoE_5alloc6string6StringEBa_ (0x557d7a4e18d4)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/<::error_chain::error_chain::impl_error_chain_processed macros>:141
[INFO] [stderr]    7: _RNnMs3_NfNyCsgHx54g9fS40_5cargo4util5flockNsB5_10Filesystem4open (0x557d7a64d1e0)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/util/flock.rs:208
[INFO] [stderr]    8: _RINsMs3_NfNyCsgHx54g9fS40_5cargo4util5flockNsB6_10Filesystem7open_rwReEBa_ (0x557d7a64cc7e)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/util/flock.rs:168
[INFO] [stderr]    9: _RNwNzNrCsgHx54g9fS40_5cargo3ops8lockfile18write_pkg_lockfile (0x557d7a6e6cab)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/ops/lockfile.rs:84
[INFO] [stderr]   10: _RNuNxNrCsgHx54g9fS40_5cargo3ops7resolve21resolve_with_registry (0x557d7a5745fe)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/ops/resolve.rs:97
[INFO] [stderr]   11: _RNnNxNrCsgHx54g9fS40_5cargo3ops7resolve10resolve_ws (0x557d7a574029)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/ops/resolve.rs:18
[INFO] [stderr]   12: _RINaCs1u9fiFsI5t1_18build_script_build23find_dependency_versionRNaNqCskZeSixylFoE_5alloc6string6StringEB2_ (0x557d7a349ffa)
[INFO] [stderr]              at /opt/crater/workdir/build.rs:35
[INFO] [stderr]   13: _RNaCs1u9fiFsI5t1_18build_script_build4main (0x557d7a34957b)
[INFO] [stderr]              at /opt/crater/workdir/build.rs:18
[INFO] [stderr]   14: _RNCINnNlCs93O65jcFPR3_3std2rt10lang_startuE0Cs1u9fiFsI5t1_18build_script_build (0x557d7a3494ff)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/rt.rs:64
[INFO] [stderr]   15: {{closure}} (0x557d7adf8202)
[INFO] [stderr]              at src/libstd/rt.rs:49
[INFO] [stderr]       do_call<closure,i32>
[INFO] [stderr]              at src/libstd/panicking.rs:297
[INFO] [stderr]   16: __rust_maybe_catch_panic (0x557d7ae00e19)
[INFO] [stderr]              at src/libpanic_unwind/lib.rs:92
[INFO] [stderr]   17: try<i32,closure> (0x557d7adf8df5)
[INFO] [stderr]              at src/libstd/panicking.rs:276
[INFO] [stderr]       catch_unwind<closure,i32>
[INFO] [stderr]              at src/libstd/panic.rs:388
[INFO] [stderr]       lang_start_internal
[INFO] [stderr]              at src/libstd/rt.rs:48
[INFO] [stderr]   18: _RINnNlCs93O65jcFPR3_3std2rt10lang_startuECs1u9fiFsI5t1_18build_script_build (0x557d7a3494d8)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/rt.rs:64
[INFO] [stderr]   19: main (0x557d7a34a1e9)
[INFO] [stderr]   20: __libc_start_main (0x7f1f679732e0)
[INFO] [stderr]   21: _start (0x557d7a345ef9)
[INFO] [stderr]   22: <unknown> (0x0)) })), backtrace: Some(stack backtrace:
[INFO] [stderr]    0: _RNjCsaR8yIphJY8S_11error_chain14make_backtrace (0x557d7adbd98e)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/error-chain-0.11.0/src/lib.rs:616
[INFO] [stderr]    1: _RNrYNjCsaR8yIphJY8S_11error_chain14make_backtraceINuNcNrCsfOXHOjakNhA_4core3ops8function6FnOnceuE9call_onceCsgHx54g9fS40_5cargo (0x557d7a5383c9)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/ops/function.rs:231
[INFO] [stderr]    2: _RINbMNsCsfOXHOjakNhA_4core6optionINcB3_6OptionINzNxCskZeSixylFoE_5alloc4sync3ArcNaNlCsbfEIBwebHU_9backtrace7capture9BacktraceEE7or_elseNjCsaR8yIphJY8S_11error_chain14make_backtraceECsgHx54g9fS40_5cargo (0x557d7a65be12)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/option.rs:714
[INFO] [stderr]    3: _RINkMs2_CsaR8yIphJY8S_11error_chainNhB6_5State3newNxNwNyCsgHx54g9fS40_5cargo4util6errors10CargoErrorEBS_ (0x557d7a6ac0a1)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/error-chain-0.11.0/src/lib.rs:724
[INFO] [stderr]    4: _RNCINcXst_NwNyCsgHx54g9fS40_5cargo4util6errorsINiNyCsfOXHOjakNhA_4core6result6ResultNeNyCs93O65jcFPR3_3std2fs4FileNqNgNxB1o_2io5error5ErrorEINbB8_14CargoResultExtB1k_E9chain_errNCNnMs3_NfBa_5flockNsB2X_10Filesystem4opens_0NaNqCskZeSixylFoE_5alloc6string6StringE0Bc_ (0x557d7a650e09)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/<::error_chain::error_chain::impl_error_chain_processed macros>:143
[INFO] [stderr]    5: _RINyMNyCsfOXHOjakNhA_4core6resultINiB3_6ResultNeNyCs93O65jcFPR3_3std2fs4FileNqNgNxBM_2io5error5ErrorE7map_errNxNwNyCsgHx54g9fS40_5cargo4util6errors10CargoErrorNCINcXst_B1L_Bv_INbB1L_14CargoResultExtBI_E9chain_errNCNnMs3_NfB1N_5flockNsB3w_10Filesystem4opens_0NaNqCskZeSixylFoE_5alloc6string6StringE0EB1P_ (0x557d7a4b81da)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/result.rs:520
[INFO] [stderr]    6: _RINcXst_NwNyCsgHx54g9fS40_5cargo4util6errorsINiNyCsfOXHOjakNhA_4core6result6ResultNeNyCs93O65jcFPR3_3std2fs4FileNqNgNxB1m_2io5error5ErrorEINbB6_14CargoResultExtB1i_E9chain_errNCNnMs3_NfB8_5flockNsB2V_10Filesystem4opens_0NaNqCskZeSixylFoE_5alloc6string6StringEBa_ (0x557d7a4e18d4)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/<::error_chain::error_chain::impl_error_chain_processed macros>:141
[INFO] [stderr]    7: _RNnMs3_NfNyCsgHx54g9fS40_5cargo4util5flockNsB5_10Filesystem4open (0x557d7a64d1e0)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/util/flock.rs:208
[INFO] [stderr]    8: _RINsMs3_NfNyCsgHx54g9fS40_5cargo4util5flockNsB6_10Filesystem7open_rwReEBa_ (0x557d7a64cc7e)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/util/flock.rs:168
[INFO] [stderr]    9: _RNwNzNrCsgHx54g9fS40_5cargo3ops8lockfile18write_pkg_lockfile (0x557d7a6e6cab)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/ops/lockfile.rs:84
[INFO] [stderr]   10: _RNuNxNrCsgHx54g9fS40_5cargo3ops7resolve21resolve_with_registry (0x557d7a5745fe)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/ops/resolve.rs:97
[INFO] [stderr]   11: _RNnNxNrCsgHx54g9fS40_5cargo3ops7resolve10resolve_ws (0x557d7a574029)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.24.0/src/cargo/ops/resolve.rs:18
[INFO] [stderr]   12: _RINaCs1u9fiFsI5t1_18build_script_build23find_dependency_versionRNaNqCskZeSixylFoE_5alloc6string6StringEB2_ (0x557d7a349ffa)
[INFO] [stderr]              at /opt/crater/workdir/build.rs:35
[INFO] [stderr]   13: _RNaCs1u9fiFsI5t1_18build_script_build4main (0x557d7a34957b)
[INFO] [stderr]              at /opt/crater/workdir/build.rs:18
[INFO] [stderr]   14: _RNCINnNlCs93O65jcFPR3_3std2rt10lang_startuE0Cs1u9fiFsI5t1_18build_script_build (0x557d7a3494ff)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/rt.rs:64
[INFO] [stderr]   15: {{closure}} (0x557d7adf8202)
[INFO] [stderr]              at src/libstd/rt.rs:49
[INFO] [stderr]       do_call<closure,i32>
[INFO] [stderr]              at src/libstd/panicking.rs:297
[INFO] [stderr]   16: __rust_maybe_catch_panic (0x557d7ae00e19)
[INFO] [stderr]              at src/libpanic_unwind/lib.rs:92
[INFO] [stderr]   17: try<i32,closure> (0x557d7adf8df5)
[INFO] [stderr]              at src/libstd/panicking.rs:276
[INFO] [stderr]       catch_unwind<closure,i32>
[INFO] [stderr]              at src/libstd/panic.rs:388
[INFO] [stderr]       lang_start_internal
[INFO] [stderr]              at src/libstd/rt.rs:48
[INFO] [stderr]   18: _RINnNlCs93O65jcFPR3_3std2rt10lang_startuECs1u9fiFsI5t1_18build_script_build (0x557d7a3494d8)
[INFO] [stderr]              at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/rt.rs:64
[INFO] [stderr]   19: main (0x557d7a34a1e9)
[INFO] [stderr]   20: __libc_start_main (0x7f1f679732e0)
[INFO] [stderr]   21: _start (0x557d7a345ef9)
[INFO] [stderr]   22: <unknown> (0x0)) })', src/libcore/result.rs:997:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x557d7adf9573 - std[698b411d1b74fcff]::sys::unix::backtrace::tracing::imp::unwind_backtrace
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x557d7adf52cb - std[698b411d1b74fcff]::sys_common::backtrace::_print
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:70
[INFO] [stderr]    2:     0x557d7adf80f6 - std[698b411d1b74fcff]::panicking::default_hook::{closure#1}
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:58
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    3:     0x557d7adf7e74 - std[698b411d1b74fcff]::panicking::default_hook
[INFO] [stderr]                                at src/libstd/panicking.rs:215
[INFO] [stderr]    4:     0x557d7adf8800 - std[698b411d1b74fcff]::panicking::rust_panic_with_hook
[INFO] [stderr]                                at src/libstd/panicking.rs:478
[INFO] [stderr]    5:     0x557d7adf8381 - std[698b411d1b74fcff]::panicking::continue_panic_fmt
[INFO] [stderr]                                at src/libstd/panicking.rs:385
[INFO] [stderr]    6:     0x557d7adf8265 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:312
[INFO] [stderr]    7:     0x557d7ae1884c - core[b849d6d0cd70c3a8]::panicking::panic_fmt
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]    8:     0x557d7a348f44 - core[b849d6d0cd70c3a8]::result::unwrap_failed::<alloc[f4750af829db9b76]::boxed::Box<dyn std[698b411d1b74fcff]::error::Error>>
[INFO] [stderr]                                at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/macros.rs:16
[INFO] [stderr]    9:     0x557d7a3491ad - <core[b849d6d0cd70c3a8]::result::Result<alloc[f4750af829db9b76]::string::String, alloc[f4750af829db9b76]::boxed::Box<dyn std[698b411d1b74fcff]::error::Error>>>::unwrap
[INFO] [stderr]                                at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/result.rs:798
[INFO] [stderr]   10:     0x557d7a34958c - build_script_build[114fc3cd2e30235d]::main
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:18
[INFO] [stderr]   11:     0x557d7a3494ff - std[698b411d1b74fcff]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]                                at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x557d7adf8202 - std[698b411d1b74fcff]::panicking::try::do_call::<std[698b411d1b74fcff]::rt::lang_start_internal::{closure#0}, i32>
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:297
[INFO] [stderr]   13:     0x557d7ae00e19 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:92
[INFO] [stderr]   14:     0x557d7adf8df5 - std[698b411d1b74fcff]::rt::lang_start_internal
[INFO] [stderr]                                at src/libstd/panicking.rs:276
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   15:     0x557d7a3494d8 - std[698b411d1b74fcff]::rt::lang_start::<()>
[INFO] [stderr]                                at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x557d7a34a1e9 - main
[INFO] [stderr]   17:     0x7f1f679732e0 - __libc_start_main
[INFO] [stderr]   18:     0x557d7a345ef9 - _start
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "47910a3a0a60263c7c8a3be25b1afab8c87e313fd86c3bf6afcbb2e5ee942b2d"`
[INFO] running `"docker" "rm" "-f" "47910a3a0a60263c7c8a3be25b1afab8c87e313fd86c3bf6afcbb2e5ee942b2d"`
[INFO] [stdout] 47910a3a0a60263c7c8a3be25b1afab8c87e313fd86c3bf6afcbb2e5ee942b2d