[INFO] crate fonterator 0.3.0 is already in cache [INFO] extracting crate fonterator 0.3.0 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fonterator/0.3.0 [INFO] extracting crate fonterator 0.3.0 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/fonterator/0.3.0 [INFO] validating manifest of fonterator-0.3.0 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 fonterator-0.3.0 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 fonterator-0.3.0 [INFO] finished frobbing fonterator-0.3.0 [INFO] frobbed toml for fonterator-0.3.0 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fonterator/0.3.0/Cargo.toml [INFO] started frobbing fonterator-0.3.0 [INFO] finished frobbing fonterator-0.3.0 [INFO] frobbed toml for fonterator-0.3.0 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/fonterator/0.3.0/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 fonterator-0.3.0 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/fonterator/0.3.0:/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] cfa641c96dc5fd8ac4e9eb45a7296c61162493c8a30adbdc8348a839e1d32d2a [INFO] running `"docker" "start" "-a" "cfa641c96dc5fd8ac4e9eb45a7296c61162493c8a30adbdc8348a839e1d32d2a"` [INFO] [stderr] Compiling png v0.10.0 [INFO] [stderr] Compiling footile v0.2.0 [INFO] [stderr] Compiling fonterator v0.3.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.40s [INFO] running `"docker" "inspect" "cfa641c96dc5fd8ac4e9eb45a7296c61162493c8a30adbdc8348a839e1d32d2a"` [INFO] running `"docker" "rm" "-f" "cfa641c96dc5fd8ac4e9eb45a7296c61162493c8a30adbdc8348a839e1d32d2a"` [INFO] [stdout] cfa641c96dc5fd8ac4e9eb45a7296c61162493c8a30adbdc8348a839e1d32d2a [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/fonterator/0.3.0:/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" "test" "--frozen" "--no-run"` [INFO] [stdout] ce2510830a7526e7cc932d5a5f034b0cb3b8e9dec366449691a874eef7bd73aa [INFO] running `"docker" "start" "-a" "ce2510830a7526e7cc932d5a5f034b0cb3b8e9dec366449691a874eef7bd73aa"` [INFO] [stderr] Compiling fonterator v0.3.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.32s [INFO] running `"docker" "inspect" "ce2510830a7526e7cc932d5a5f034b0cb3b8e9dec366449691a874eef7bd73aa"` [INFO] running `"docker" "rm" "-f" "ce2510830a7526e7cc932d5a5f034b0cb3b8e9dec366449691a874eef7bd73aa"` [INFO] [stdout] ce2510830a7526e7cc932d5a5f034b0cb3b8e9dec366449691a874eef7bd73aa [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/fonterator/0.3.0:/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" "test" "--frozen"` [INFO] [stdout] b5e64a771e5240dca9f53d46e983c2820bf28458581c49f79276b8055ae5a34c [INFO] running `"docker" "start" "-a" "b5e64a771e5240dca9f53d46e983c2820bf28458581c49f79276b8055ae5a34c"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/crater/target/debug/deps/fonterator-0ce8018642a28ac1 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests fonterator [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 19) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 19) stdout ---- [INFO] [stdout] thread 'src/lib.rs - (line 19)' panicked at 'test executable failed: [INFO] [stdout] [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:997:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5623981a5283 - std[698b411d1b74fcff]::sys::unix::backtrace::tracing::imp::unwind_backtrace [INFO] [stdout] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stdout] 1: 0x5623981a12eb - std[698b411d1b74fcff]::sys_common::backtrace::_print [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:70 [INFO] [stdout] 2: 0x5623981a40e6 - std[698b411d1b74fcff]::panicking::default_hook::{closure#1} [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:58 [INFO] [stdout] at src/libstd/panicking.rs:200 [INFO] [stdout] 3: 0x5623981a3e64 - std[698b411d1b74fcff]::panicking::default_hook [INFO] [stdout] at src/libstd/panicking.rs:215 [INFO] [stdout] 4: 0x5623981a4790 - std[698b411d1b74fcff]::panicking::rust_panic_with_hook [INFO] [stdout] at src/libstd/panicking.rs:478 [INFO] [stdout] 5: 0x5623981a4311 - std[698b411d1b74fcff]::panicking::continue_panic_fmt [INFO] [stdout] at src/libstd/panicking.rs:385 [INFO] [stdout] 6: 0x5623981a41f5 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:312 [INFO] [stdout] 7: 0x5623981b8f3c - core[b849d6d0cd70c3a8]::panicking::panic_fmt [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 8: 0x562398180637 - core[b849d6d0cd70c3a8]::result::unwrap_failed:: [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libcore/macros.rs:16 [INFO] [stdout] 9: 0x56239810e70e - >::unwrap [INFO] [stdout] 10: 0x56239810b346 - rust_out[317d481089b8c8fe]::main [INFO] [stdout] 11: 0x56239810c852 - std[698b411d1b74fcff]::rt::lang_start::<()>::{closure#0} [INFO] [stdout] 12: 0x5623981a4192 - std[698b411d1b74fcff]::panicking::try::do_call:: [INFO] [stdout] at src/libstd/rt.rs:49 [INFO] [stdout] at src/libstd/panicking.rs:297 [INFO] [stdout] 13: 0x5623981a6a99 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:92 [INFO] [stdout] 14: 0x5623981a4cc5 - std[698b411d1b74fcff]::rt::lang_start_internal [INFO] [stdout] at src/libstd/panicking.rs:276 [INFO] [stdout] at src/libstd/panic.rs:388 [INFO] [stdout] at src/libstd/rt.rs:48 [INFO] [stdout] 15: 0x56239810c4a4 - std[698b411d1b74fcff]::rt::lang_start::<()> [INFO] [stdout] 16: 0x56239810b3fa - main [INFO] [stdout] 17: 0x7fc12cb662e0 - __libc_start_main [INFO] [stdout] 18: 0x5623980ad319 - _start [INFO] [stdout] 19: 0x0 - [INFO] [stdout] [INFO] [stdout] ', src/librustdoc/test.rs:389:17 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x7f3aef4ec1e3 - std[698b411d1b74fcff]::sys::unix::backtrace::tracing::imp::unwind_backtrace [INFO] [stdout] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stdout] 1: 0x7f3aef4e49cb - std[698b411d1b74fcff]::sys_common::backtrace::_print [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:70 [INFO] [stdout] 2: 0x7f3aef4e83f6 - std[698b411d1b74fcff]::panicking::default_hook::{closure#1} [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:58 [INFO] [stdout] at src/libstd/panicking.rs:200 [INFO] [stdout] 3: 0x7f3aef4e80f7 - std[698b411d1b74fcff]::panicking::default_hook [INFO] [stdout] at src/libstd/panicking.rs:209 [INFO] [stdout] 4: 0x7f3af15479ef - rustc[8198c0d23dc1abcc]::util::common::panic_hook [INFO] [stdout] 5: 0x7f3aef4e8bcd - std[698b411d1b74fcff]::panicking::rust_panic_with_hook [INFO] [stdout] at src/libstd/panicking.rs:482 [INFO] [stdout] 6: 0x7f3aef4e8681 - std[698b411d1b74fcff]::panicking::continue_panic_fmt [INFO] [stdout] at src/libstd/panicking.rs:385 [INFO] [stdout] 7: 0x7f3aef4e85ce - std[698b411d1b74fcff]::panicking::begin_panic_fmt [INFO] [stdout] at src/libstd/panicking.rs:340 [INFO] [stdout] 8: 0x557888a518fc - rustdoc[88d74997c65aea9c]::test::run_test [INFO] [stdout] at src/librustdoc/test.rs:389 [INFO] [stdout] 9: 0x5578889314e7 - >::set::::add_test::{closure#0}::{closure#0}::{closure#0}, ()>::{closure#0}, ()> [INFO] [stdout] at src/librustdoc/test.rs:754 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.2/src/lib.rs:155 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libsyntax/lib.rs:112 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.2/src/lib.rs:155 [INFO] [stdout] 10: 0x5578889b3961 - syntax[55b360ca1c87f545]::with_globals::<::add_test::{closure#0}::{closure#0}::{closure#0}, ()> [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libsyntax/lib.rs:111 [INFO] [stdout] 11: 0x5578887ce508 - std[698b411d1b74fcff]::sys_common::backtrace::__rust_begin_short_backtrace::<::add_test::{closure#0}::{closure#0}, ()> [INFO] [stdout] at src/librustdoc/test.rs:751 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/sys_common/backtrace.rs:135 [INFO] [stdout] 12: 0x557888784573 - std[698b411d1b74fcff]::panicking::try::do_call::::spawn_unchecked<::add_test::{closure#0}::{closure#0}, ()>::{closure#0}::{closure#0}>, ()> [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/thread/mod.rs:469 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/panic.rs:309 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/panicking.rs:297 [INFO] [stdout] 13: 0x7f3aef4fa029 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:92 [INFO] [stdout] 14: 0x5578887fe957 - <::spawn_unchecked<::add_test::{closure#0}::{closure#0}, ()>::{closure#0} as alloc[f4750af829db9b76]::boxed::FnBox<()>>::call_box [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/panicking.rs:276 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/panic.rs:388 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/libstd/thread/mod.rs:468 [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/liballoc/boxed.rs:734 [INFO] [stdout] 15: 0x7f3aef4f8dbd - ::new::thread_start [INFO] [stdout] at /rustc/7fea0229842e79db1159ea58ad9a653b288efee9/src/liballoc/boxed.rs:744 [INFO] [stdout] at src/libstd/sys_common/thread.rs:14 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:81 [INFO] [stdout] 16: 0x7f3aef06a493 - start_thread [INFO] [stdout] 17: 0x7f3aeeb95ace - __clone [INFO] [stdout] 18: 0x0 - [INFO] [stdout] query stack during panic: [INFO] [stdout] end of query stack [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 19) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `"docker" "inspect" "b5e64a771e5240dca9f53d46e983c2820bf28458581c49f79276b8055ae5a34c"` [INFO] running `"docker" "rm" "-f" "b5e64a771e5240dca9f53d46e983c2820bf28458581c49f79276b8055ae5a34c"` [INFO] [stdout] b5e64a771e5240dca9f53d46e983c2820bf28458581c49f79276b8055ae5a34c