Dec 15 14:33:46.049 INFO testing fonterator-0.3.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 14:33:46.049 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 15 14:33:46.523 INFO [stdout] a4f33a018833913f2b5bd102e5f8ba5e5af69fe2bddfbada3543a92b48156129
Dec 15 14:33:46.531 INFO running `"docker" "start" "-a" "a4f33a018833913f2b5bd102e5f8ba5e5af69fe2bddfbada3543a92b48156129"`
Dec 15 14:33:47.674 INFO [stderr] usermod: no changes
Dec 15 14:33:47.763 INFO [stderr]    Compiling png v0.10.0
Dec 15 14:33:49.814 INFO [stderr]    Compiling footile v0.2.0
Dec 15 14:33:51.812 INFO [stderr]    Compiling fonterator v0.3.0 (/source)
Dec 15 14:33:54.862 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.15s
Dec 15 14:33:54.866 INFO [stderr] su: No module specific data is present
Dec 15 14:33:55.480 INFO running `"docker" "inspect" "a4f33a018833913f2b5bd102e5f8ba5e5af69fe2bddfbada3543a92b48156129"`
Dec 15 14:33:55.832 INFO running `"docker" "rm" "-f" "a4f33a018833913f2b5bd102e5f8ba5e5af69fe2bddfbada3543a92b48156129"`
Dec 15 14:33:56.107 INFO [stdout] a4f33a018833913f2b5bd102e5f8ba5e5af69fe2bddfbada3543a92b48156129
Dec 15 14:33:56.113 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 15 14:33:56.617 INFO [stdout] 2f218d0dc019e32124bf7f00155357f30bf6e9509943e68a0cac1f57a4feb893
Dec 15 14:33:56.621 INFO running `"docker" "start" "-a" "2f218d0dc019e32124bf7f00155357f30bf6e9509943e68a0cac1f57a4feb893"`
Dec 15 14:33:57.607 INFO [stderr] usermod: no changes
Dec 15 14:33:57.727 INFO [stderr]    Compiling fonterator v0.3.0 (/source)
Dec 15 14:33:59.903 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.25s
Dec 15 14:33:59.906 INFO [stderr] su: No module specific data is present
Dec 15 14:34:00.199 INFO running `"docker" "inspect" "2f218d0dc019e32124bf7f00155357f30bf6e9509943e68a0cac1f57a4feb893"`
Dec 15 14:34:00.345 INFO running `"docker" "rm" "-f" "2f218d0dc019e32124bf7f00155357f30bf6e9509943e68a0cac1f57a4feb893"`
Dec 15 14:34:00.510 INFO [stdout] 2f218d0dc019e32124bf7f00155357f30bf6e9509943e68a0cac1f57a4feb893
Dec 15 14:34:00.515 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 15 14:34:00.713 INFO [stdout] bbbe07db3ead0b108fb7e5d7d45d8765181b81e73f1cdb84b1e884675d945ccb
Dec 15 14:34:00.716 INFO running `"docker" "start" "-a" "bbbe07db3ead0b108fb7e5d7d45d8765181b81e73f1cdb84b1e884675d945ccb"`
Dec 15 14:34:01.447 INFO [stderr] usermod: no changes
Dec 15 14:34:01.536 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 15 14:34:01.539 INFO [stderr]      Running /target/debug/deps/fonterator-872441460e149afe
Dec 15 14:34:01.539 INFO [stdout] 
Dec 15 14:34:01.539 INFO [stderr]    Doc-tests fonterator
Dec 15 14:34:01.539 INFO [stdout] running 0 tests
Dec 15 14:34:01.539 INFO [stdout] 
Dec 15 14:34:01.539 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 14:34:01.539 INFO [stdout] 
Dec 15 14:34:03.611 INFO [stdout] 
Dec 15 14:34:03.611 INFO [stdout] running 1 test
Dec 15 14:34:11.855 INFO [stdout] test src/lib.rs -  (line 19) ... FAILED
Dec 15 14:34:11.855 INFO [stdout] 
Dec 15 14:34:11.855 INFO [stdout] failures:
Dec 15 14:34:11.855 INFO [stdout] 
Dec 15 14:34:11.855 INFO [stdout] ---- src/lib.rs -  (line 19) stdout ----
Dec 15 14:34:11.855 INFO [stdout] thread 'src/lib.rs -  (line 19)' panicked at 'test executable failed:
Dec 15 14:34:11.855 INFO [stdout] 
Dec 15 14:34:11.855 INFO [stdout] 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:1009:5
Dec 15 14:34:11.855 INFO [stdout] stack backtrace:
Dec 15 14:34:11.855 INFO [stdout]    0:     0x55e9a75f04f3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::heb4d4d98bcf46d90
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Dec 15 14:34:11.855 INFO [stdout]    1:     0x55e9a75eafc8 - std::sys_common::backtrace::_print::h919420b22c2473e3
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/sys_common/backtrace.rs:71
Dec 15 14:34:11.855 INFO [stdout]    2:     0x55e9a75ef612 - std::panicking::default_hook::{{closure}}::h22d4ac021acb88d5
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/sys_common/backtrace.rs:59
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:210
Dec 15 14:34:11.855 INFO [stdout]    3:     0x55e9a75ef384 - std::panicking::default_hook::h1134a4d34aab4428
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:224
Dec 15 14:34:11.855 INFO [stdout]    4:     0x55e9a75efcc0 - std::panicking::rust_panic_with_hook::h9c89557c251f2d42
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:487
Dec 15 14:34:11.855 INFO [stdout]    5:     0x55e9a75ef841 - std::panicking::continue_panic_fmt::h6b63497ce98499d4
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:394
Dec 15 14:34:11.855 INFO [stdout]    6:     0x55e9a75ef725 - rust_begin_unwind
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:321
Dec 15 14:34:11.855 INFO [stdout]    7:     0x55e9a75fe43c - core::panicking::panic_fmt::h68c043a5e81351f3
Dec 15 14:34:11.855 INFO [stdout]                                at src/libcore/panicking.rs:95
Dec 15 14:34:11.855 INFO [stdout]    8:     0x55e9a75cefa0 - core::result::unwrap_failed::hdfcafd0c9b7b85d3
Dec 15 14:34:11.855 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libcore/macros.rs:26
Dec 15 14:34:11.855 INFO [stdout]    9:     0x55e9a755788e - <core::result::Result<T, E>>::unwrap::he58e7c1729985d08
Dec 15 14:34:11.855 INFO [stdout]   10:     0x55e9a755a356 - rust_out::main::h19287f9e3b324627
Dec 15 14:34:11.855 INFO [stdout]   11:     0x55e9a7559ec2 - std::rt::lang_start::{{closure}}::h5e0dad62fb26e8ce
Dec 15 14:34:11.855 INFO [stdout]   12:     0x55e9a75ef6c2 - std::panicking::try::do_call::hd22385b9fba3aa8f
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/rt.rs:59
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:306
Dec 15 14:34:11.855 INFO [stdout]   13:     0x55e9a75fd399 - __rust_maybe_catch_panic
Dec 15 14:34:11.855 INFO [stdout]                                at src/libpanic_unwind/lib.rs:102
Dec 15 14:34:11.855 INFO [stdout]   14:     0x55e9a75f0093 - std::rt::lang_start_internal::h884c76ddf53aa8b4
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panicking.rs:285
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/panic.rs:398
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/rt.rs:58
Dec 15 14:34:11.855 INFO [stdout]   15:     0x55e9a7559ea4 - std::rt::lang_start::h468f714fb643dc8b
Dec 15 14:34:11.855 INFO [stdout]   16:     0x55e9a755a40a - main
Dec 15 14:34:11.855 INFO [stdout]   17:     0x7f91e3a5482f - __libc_start_main
Dec 15 14:34:11.855 INFO [stdout]   18:     0x55e9a74f9428 - _start
Dec 15 14:34:11.855 INFO [stdout]   19:                0x0 - <unknown>
Dec 15 14:34:11.855 INFO [stdout] 
Dec 15 14:34:11.855 INFO [stdout] ', src/librustdoc/test.rs:361:17
Dec 15 14:34:11.855 INFO [stdout] stack backtrace:
Dec 15 14:34:11.855 INFO [stdout]    0:     0x7f6fb357cf43 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::heb4d4d98bcf46d90
Dec 15 14:34:11.855 INFO [stdout]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Dec 15 14:34:11.856 INFO [stdout]    1:     0x7f6fb3573fa8 - std::sys_common::backtrace::_print::h919420b22c2473e3
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/sys_common/backtrace.rs:71
Dec 15 14:34:11.856 INFO [stdout]    2:     0x7f6fb3579222 - std::panicking::default_hook::{{closure}}::h22d4ac021acb88d5
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/sys_common/backtrace.rs:59
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/panicking.rs:210
Dec 15 14:34:11.856 INFO [stdout]    3:     0x7f6fb3578f17 - std::panicking::default_hook::h1134a4d34aab4428
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/panicking.rs:218
Dec 15 14:34:11.856 INFO [stdout]    4:     0x7f6fb5783681 - rustc::util::common::panic_hook::h5f1ef819f65e49ce
Dec 15 14:34:11.856 INFO [stdout]    5:     0x7f6fb3579a09 - std::panicking::rust_panic_with_hook::h9c89557c251f2d42
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/panicking.rs:491
Dec 15 14:34:11.856 INFO [stdout]    6:     0x7f6fb35794b1 - std::panicking::continue_panic_fmt::h6b63497ce98499d4
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/panicking.rs:394
Dec 15 14:34:11.856 INFO [stdout]    7:     0x7f6fb35793fe - std::panicking::begin_panic_fmt::h33c12d7eb9e26fea
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/panicking.rs:349
Dec 15 14:34:11.856 INFO [stdout]    8:     0x55d6b7db2dd0 - <rustdoc::test::Collector as rustdoc::test::Tester>::add_test::{{closure}}::{{closure}}::{{closure}}::h03844441a87ed622
Dec 15 14:34:11.856 INFO [stdout]                                at src/librustdoc/test.rs:361
Dec 15 14:34:11.856 INFO [stdout]                                at src/librustdoc/test.rs:653
Dec 15 14:34:11.856 INFO [stdout]    9:     0x55d6b7d6f398 - <scoped_tls::ScopedKey<T>>::set::ha4da892a47d9254a
Dec 15 14:34:11.856 INFO [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.2/src/lib.rs:155
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libsyntax/lib.rs:123
Dec 15 14:34:11.856 INFO [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.2/src/lib.rs:155
Dec 15 14:34:11.856 INFO [stdout]   10:     0x55d6b7ca753f - syntax::with_globals::hd5f80a8e81630563
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libsyntax/lib.rs:122
Dec 15 14:34:11.856 INFO [stdout]   11:     0x55d6b7c3cd24 - std::panicking::try::do_call::haa456735219e3377
Dec 15 14:34:11.856 INFO [stdout]                                at src/librustdoc/test.rs:650
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panic.rs:319
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panicking.rs:306
Dec 15 14:34:11.856 INFO [stdout]   12:     0x7f6fb3596649 - __rust_maybe_catch_panic
Dec 15 14:34:11.856 INFO [stdout]                                at src/libpanic_unwind/lib.rs:102
Dec 15 14:34:11.856 INFO [stdout]   13:     0x55d6b7c91e49 - rustc_driver::in_named_rustc_thread::he2bcf78be8ab5538
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panicking.rs:285
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panic.rs:398
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/librustc_driver/lib.rs:1556
Dec 15 14:34:11.856 INFO [stdout]   14:     0x55d6b7d88140 - <F as alloc::boxed::FnBox<A>>::call_box::h418f2961326e63a6
Dec 15 14:34:11.856 INFO [stdout]                                at src/librustdoc/test.rs:650
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/liballoc/boxed.rs:673
Dec 15 14:34:11.856 INFO [stdout]   15:     0x7f6fb4be5102 - <F as alloc::boxed::FnBox<A>>::call_box::hb274b5baa0755876
Dec 15 14:34:11.856 INFO [stdout]                                at src/libtest/lib.rs:1476
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/liballoc/boxed.rs:673
Dec 15 14:34:11.856 INFO [stdout]   16:     0x7f6fb3596649 - __rust_maybe_catch_panic
Dec 15 14:34:11.856 INFO [stdout]                                at src/libpanic_unwind/lib.rs:102
Dec 15 14:34:11.856 INFO [stdout]   17:     0x7f6fb4c03427 - test::run_test::run_test_inner::{{closure}}::h5f14673685eef7c8
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panicking.rs:285
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panic.rs:398
Dec 15 14:34:11.856 INFO [stdout]                                at src/libtest/lib.rs:1438
Dec 15 14:34:11.856 INFO [stdout]   18:     0x7f6fb4bdd334 - std::sys_common::backtrace::__rust_begin_short_backtrace::h96de92a7d062bb5f
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/sys_common/backtrace.rs:136
Dec 15 14:34:11.856 INFO [stdout]   19:     0x7f6fb4bdd9a4 - std::panicking::try::do_call::h6a71e68ea4ad0d8a
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/thread/mod.rs:479
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panic.rs:319
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panicking.rs:306
Dec 15 14:34:11.856 INFO [stdout]   20:     0x7f6fb3596649 - __rust_maybe_catch_panic
Dec 15 14:34:11.856 INFO [stdout]                                at src/libpanic_unwind/lib.rs:102
Dec 15 14:34:11.856 INFO [stdout]   21:     0x7f6fb4be4e4c - <F as alloc::boxed::FnBox<A>>::call_box::h260fd1ad8e2854a6
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panicking.rs:285
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/panic.rs:398
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/libstd/thread/mod.rs:478
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/liballoc/boxed.rs:673
Dec 15 14:34:11.856 INFO [stdout]   22:     0x7f6fb3589aed - std::sys::unix::thread::Thread::new::thread_start::h08aa646226e66c99
Dec 15 14:34:11.856 INFO [stdout]                                at /rustc/bd47d6825bf4090517549d33cfef10d3300b4a75/src/liballoc/boxed.rs:683
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/sys_common/thread.rs:24
Dec 15 14:34:11.856 INFO [stdout]                                at src/libstd/sys/unix/thread.rs:91
Dec 15 14:34:11.856 INFO [stdout]   23:     0x7f6fb32fd6b9 - start_thread
Dec 15 14:34:11.856 INFO [stdout]   24:     0x7f6fb2c1541c - clone
Dec 15 14:34:11.856 INFO [stdout]   25:                0x0 - <unknown>
Dec 15 14:34:11.856 INFO [stdout] query stack during panic:
Dec 15 14:34:11.856 INFO [stdout] end of query stack
Dec 15 14:34:11.856 INFO [stdout] 
Dec 15 14:34:11.856 INFO [stdout] 
Dec 15 14:34:11.856 INFO [stdout] failures:
Dec 15 14:34:11.856 INFO [stdout]     src/lib.rs -  (line 19)
Dec 15 14:34:11.856 INFO [stdout] 
Dec 15 14:34:11.856 INFO [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 14:34:11.856 INFO [stdout] 
Dec 15 14:34:11.884 INFO [stderr] error: test failed, to rerun pass '--doc'
Dec 15 14:34:11.884 INFO [stderr] su: No module specific data is present
Dec 15 14:34:12.571 INFO running `"docker" "inspect" "bbbe07db3ead0b108fb7e5d7d45d8765181b81e73f1cdb84b1e884675d945ccb"`
Dec 15 14:34:12.736 INFO running `"docker" "rm" "-f" "bbbe07db3ead0b108fb7e5d7d45d8765181b81e73f1cdb84b1e884675d945ccb"`
Dec 15 14:34:12.897 INFO [stdout] bbbe07db3ead0b108fb7e5d7d45d8765181b81e73f1cdb84b1e884675d945ccb