[INFO] fetching crate sbnf 0.4.0...
[INFO] testing sbnf-0.4.0 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate sbnf 0.4.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate sbnf 0.4.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sbnf 0.4.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sbnf 0.4.0
[INFO] tweaked toml for crates.io crate sbnf 0.4.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e736cbdead63bb723642ca94fcf2c34537817c79db334610ae1992f5a0bf9803
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e736cbdead63bb723642ca94fcf2c34537817c79db334610ae1992f5a0bf9803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e736cbdead63bb723642ca94fcf2c34537817c79db334610ae1992f5a0bf9803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e736cbdead63bb723642ca94fcf2c34537817c79db334610ae1992f5a0bf9803", kill_on_drop: false }`
[INFO] [stdout] e736cbdead63bb723642ca94fcf2c34537817c79db334610ae1992f5a0bf9803
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 163681da59be7a884645b30d7f78b2ab29d62505c44f07a987b6e0bcad769b01
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "163681da59be7a884645b30d7f78b2ab29d62505c44f07a987b6e0bcad769b01", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sbnf v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "163681da59be7a884645b30d7f78b2ab29d62505c44f07a987b6e0bcad769b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "163681da59be7a884645b30d7f78b2ab29d62505c44f07a987b6e0bcad769b01", kill_on_drop: false }`
[INFO] [stdout] 163681da59be7a884645b30d7f78b2ab29d62505c44f07a987b6e0bcad769b01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd75c65cf81427f9de78de1d41398a9c8e329d4af79b8b53314d669de80be7e7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dd75c65cf81427f9de78de1d41398a9c8e329d4af79b8b53314d669de80be7e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling sbnf v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Variable`
[INFO] [stdout]     --> src/compiler/codegen.rs:1388:9
[INFO] [stdout]      |
[INFO] [stdout] 1388 |         Variable(&'static str),
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `variable`
[INFO] [stdout]     --> src/compiler/codegen.rs:1437:8
[INFO] [stdout]      |
[INFO] [stdout] 1437 |     fn variable(s: &'static str) -> TestExpression {
[INFO] [stdout]      |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `m_var`
[INFO] [stdout]     --> src/compiler/codegen.rs:1481:8
[INFO] [stdout]      |
[INFO] [stdout] 1481 |     fn m_var(s: &'static str, r: &[TestExpression]) -> TestMatch {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.27s
[INFO] running `Command { std: "docker" "inspect" "dd75c65cf81427f9de78de1d41398a9c8e329d4af79b8b53314d669de80be7e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd75c65cf81427f9de78de1d41398a9c8e329d4af79b8b53314d669de80be7e7", kill_on_drop: false }`
[INFO] [stdout] dd75c65cf81427f9de78de1d41398a9c8e329d4af79b8b53314d669de80be7e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 564f9f396b4585f9029d19d2b72ff8d0c5fdee44fa8af8f3fdb8fde9e1ad3776
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "564f9f396b4585f9029d19d2b72ff8d0c5fdee44fa8af8f3fdb8fde9e1ad3776", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variant is never constructed: `Variable`
[INFO] [stdout] running 16 tests
[INFO] [stderr]     --> src/compiler/codegen.rs:1388:9
[INFO] [stdout] test sublime_syntax::tests::serialize_empty_syntax ... ok
[INFO] [stderr]      |
[INFO] [stdout] test sublime_syntax::tests::serialize_variables ... ok
[INFO] [stderr] 1388 |         Variable(&'static str),
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `variable`
[INFO] [stderr]     --> src/compiler/codegen.rs:1437:8
[INFO] [stderr]      |
[INFO] [stderr] 1437 |     fn variable(s: &'static str) -> TestExpression {
[INFO] [stderr]      |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `m_var`
[INFO] [stderr]     --> src/compiler/codegen.rs:1481:8
[INFO] [stderr]      |
[INFO] [stderr] 1481 |     fn m_var(s: &'static str, r: &[TestExpression]) -> TestMatch {
[INFO] [stderr]      |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sbnf-d11ae38fccccceca
[INFO] [stdout] test sbnf::tests::parse_empty ... ok
[INFO] [stdout] test sbnf::tests::parse_terminals ... ok
[INFO] [stdout] test compiler::codegen::tests::collect_optional ... ok
[INFO] [stdout] test compiler::codegen::tests::collect_repetition ... ok
[INFO] [stdout] test sublime_syntax::tests::serialize_contexts ... ok
[INFO] [stdout] test compiler::codegen::tests::collect_passive ... ok
[INFO] [stdout] test compiler::tests::compile_simple_branch ... ok
[INFO] [stdout] test sbnf::tests::parse_headers ... ok
[INFO] [stdout] test compiler::tests::compile_syntax_parameters ... ok
[INFO] [stdout] test sbnf::tests::parse_syntax_parameters ... ok
[INFO] [stdout] test sbnf::tests::parse_rules ... ok
[INFO] [stdout] test compiler::codegen::tests::collect_alternation ... ok
[INFO] [stdout] test compiler::codegen::tests::collect_concat ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/syntax_tests-16cd24607ba8d1c7
[INFO] [stdout] test compiler::tests::compile_simple_repetition ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', tests/syntax_tests.rs:19:58
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x56113a9dfa10 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x56113a9dfa10 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x56113a9dfa10 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x56113a9dfa10 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x56113a9fdbfc - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]    5:     0x56113a9dcd02 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stderr]    6:     0x56113a9e1edd - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x56113a9e1edd - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]    8:     0x56113a9e1edd - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stderr]    9:     0x56113a9e1b88 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:227
[INFO] [stderr]   10:     0x56113a9e2561 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stderr]   11:     0x56113a9e2109 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stderr]   12:     0x56113a9dfe9c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   13:     0x56113a9e20c9 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stderr]   14:     0x56113a9fcf11 - core::panicking::panic_fmt::h5b17d4a0e853d0f5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:85
[INFO] [stderr]   15:     0x56113a9fcd33 - core::option::expect_none_failed::hd08bf36cae411fff
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/option.rs:1234
[INFO] [stderr]   16:     0x56113a9c5620 - core::result::Result<T,E>::unwrap::h7a4de164c5941f12
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/result.rs:973
[INFO] [stderr]   17:     0x56113a9b9266 - syntax_tests::main::h4dbec3fcef70a3ff
[INFO] [stderr]                                at /opt/rustwide/workdir/tests/syntax_tests.rs:19
[INFO] [stderr]   18:     0x56113a9bd52b - core::ops::function::FnOnce::call_once::h67632e4b03355157
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]   19:     0x56113a9c4dbe - std::sys_common::backtrace::__rust_begin_short_backtrace::hdf310e99b036fb16
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]   20:     0x56113a9bd161 - std::rt::lang_start::{{closure}}::h5b16f37c1bcd259d
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/rt.rs:66
[INFO] [stderr]   21:     0x56113a9e2987 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h908982dfc31b926f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:259
[INFO] [stderr]   22:     0x56113a9e2987 - std::panicking::try::do_call::h92777899503b7584
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stderr]   23:     0x56113a9e2987 - std::panicking::try::h8815656b2b76e792
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stderr]   24:     0x56113a9e2987 - std::panic::catch_unwind::h112ab81228f50b46
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stderr]   25:     0x56113a9e2987 - std::rt::lang_start_internal::h1772a706c7575c24
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/rt.rs:51
[INFO] [stderr]   26:     0x56113a9bd137 - std::rt::lang_start::hbe8bca2e7a00909d
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/rt.rs:65
[INFO] [stderr]   27:     0x56113a9bb3ea - main
[INFO] [stderr]   28:     0x7fc118f130b3 - __libc_start_main
[INFO] [stderr]   29:     0x56113a9b90ce - _start
[INFO] [stderr]   30:                0x0 - <unknown>
[INFO] [stderr] error: test failed, to rerun pass '--test syntax_tests'
[INFO] running `Command { std: "docker" "inspect" "564f9f396b4585f9029d19d2b72ff8d0c5fdee44fa8af8f3fdb8fde9e1ad3776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564f9f396b4585f9029d19d2b72ff8d0c5fdee44fa8af8f3fdb8fde9e1ad3776", kill_on_drop: false }`
[INFO] [stdout] 564f9f396b4585f9029d19d2b72ff8d0c5fdee44fa8af8f3fdb8fde9e1ad3776
