[INFO] updating cached repository danger/rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/danger/rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/danger/rust" "work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/danger/rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/danger/rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/danger/rust" "work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/danger/rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/danger/rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f0f9603f57edae1b0e333d15dbba053e6cfc5e7b
[INFO] sha for GitHub repo danger/rust: f0f9603f57edae1b0e333d15dbba053e6cfc5e7b
[INFO] validating manifest of danger/rust on toolchain master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of danger/rust on toolchain try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing danger/rust
[INFO] finished frobbing danger/rust
[INFO] frobbed toml for danger/rust written to work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/danger/rust/Cargo.toml
[INFO] started frobbing danger/rust
[INFO] finished frobbing danger/rust
[INFO] frobbed toml for danger/rust written to work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/danger/rust/Cargo.toml
[INFO] crate danger/rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking danger/rust against master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf for pr-60444
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60444/worker-0/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/danger/rust:/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" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 06e938551ba81116d1ffede56cd40956dbc64b522e26bda97f9e0cf14cf4732e
[INFO] running `"docker" "start" "-a" "06e938551ba81116d1ffede56cd40956dbc64b522e26bda97f9e0cf14cf4732e"`
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking tokio-threadpool v0.1.8
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking h2 v0.1.13
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.3
[INFO] [stderr]     Checking Inflector v0.6.0
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking hyper v0.12.12
[INFO] [stderr]    Compiling schemafy_snapshot v0.4.1
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.3
[INFO] [stderr]    Compiling schemafy v0.4.4
[INFO] [stderr] error: failed to run custom build command for `schemafy v0.4.4`
[INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/schemafy-09264479707fb802/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] cargo:rerun-if-changed=src/schema.json
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] error: 'rustfmt' is not installed for the toolchain '92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt'
[INFO] [stderr] To install, run `rustup component add rustfmt --toolchain 92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt`
[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:     0x556e953f0693 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hd683c720649fc6ca
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x556e953ec47b - std::sys_common::backtrace::_print::h40d9544529f5324d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x556e953ef526 - std::panicking::default_hook::{{closure}}::hf34ca0bb1665e3f2
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:197
[INFO] [stderr]    3:     0x556e953ef2b9 - std::panicking::default_hook::hc1c83e7d587e3fd7
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x556e953efb7f - std::panicking::rust_panic_with_hook::ha5f015e1588f744c
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x556e953ef701 - std::panicking::continue_panic_fmt::h092f32d98e64981a
[INFO] [stderr]                                at src/libstd/panicking.rs:381
[INFO] [stderr]    6:     0x556e953ef5e5 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:308
[INFO] [stderr]    7:     0x556e95407c8c - core::panicking::panic_fmt::h10765a4790762297
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]    8:     0x556e952fa3f2 - core::result::unwrap_failed::he1e37d961d16b1d7
[INFO] [stderr]                                at /rustc/92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/src/libcore/macros.rs:18
[INFO] [stderr]    9:     0x556e952fa516 - core::result::Result<T,E>::unwrap::h084eb35b4015a2d7
[INFO] [stderr]                                at /rustc/92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/src/libcore/result.rs:800
[INFO] [stderr]   10:     0x556e952fb6a1 - build_script_build::main::h0026129e62845165
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/schemafy-0.4.4/build.rs:22
[INFO] [stderr]   11:     0x556e952fbc5f - std::rt::lang_start::{{closure}}::h8c79ab341a103e2e
[INFO] [stderr]                                at /rustc/92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x556e953ef5d2 - std::panicking::try::do_call::hc02c345606c78354
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:293
[INFO] [stderr]   13:     0x556e953f5bc9 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   14:     0x556e953f008c - std::rt::lang_start_internal::hd6e28da2a7f25305
[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:     0x556e952fbc38 - std::rt::lang_start::h7ea3a648586fa3ea
[INFO] [stderr]                                at /rustc/92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x556e952fb809 - main
[INFO] [stderr]   17:     0x7f84577202e0 - __libc_start_main
[INFO] [stderr]   18:     0x556e952f9759 - _start
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "06e938551ba81116d1ffede56cd40956dbc64b522e26bda97f9e0cf14cf4732e"`
[INFO] running `"docker" "rm" "-f" "06e938551ba81116d1ffede56cd40956dbc64b522e26bda97f9e0cf14cf4732e"`
[INFO] [stdout] 06e938551ba81116d1ffede56cd40956dbc64b522e26bda97f9e0cf14cf4732e