[INFO] fetching crate sbnf 0.4.0...
[INFO] testing sbnf-0.4.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate sbnf 0.4.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate sbnf 0.4.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4778d09bce3ac290ae1266231d1011aac468f69ed75178616bf55b8f59571444
[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" "4778d09bce3ac290ae1266231d1011aac468f69ed75178616bf55b8f59571444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4778d09bce3ac290ae1266231d1011aac468f69ed75178616bf55b8f59571444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4778d09bce3ac290ae1266231d1011aac468f69ed75178616bf55b8f59571444", kill_on_drop: false }`
[INFO] [stdout] 4778d09bce3ac290ae1266231d1011aac468f69ed75178616bf55b8f59571444
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 172174fdfea60487e86510d4c8980773fe2fc693de267032e543f7037ff18196
[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" "172174fdfea60487e86510d4c8980773fe2fc693de267032e543f7037ff18196", kill_on_drop: false }`
[INFO] [stderr]    Compiling sbnf v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.57s
[INFO] running `Command { std: "docker" "inspect" "172174fdfea60487e86510d4c8980773fe2fc693de267032e543f7037ff18196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "172174fdfea60487e86510d4c8980773fe2fc693de267032e543f7037ff18196", kill_on_drop: false }`
[INFO] [stdout] 172174fdfea60487e86510d4c8980773fe2fc693de267032e543f7037ff18196
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 81d4cc80b5d461efb987904831ad98ef175f7c52d704c0244c3935b083d67690
[INFO] running `Command { std: "docker" "start" "-a" "81d4cc80b5d461efb987904831ad98ef175f7c52d704c0244c3935b083d67690", 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 7.51s
[INFO] running `Command { std: "docker" "inspect" "81d4cc80b5d461efb987904831ad98ef175f7c52d704c0244c3935b083d67690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81d4cc80b5d461efb987904831ad98ef175f7c52d704c0244c3935b083d67690", kill_on_drop: false }`
[INFO] [stdout] 81d4cc80b5d461efb987904831ad98ef175f7c52d704c0244c3935b083d67690
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e324ae4a62f667936dd67ae5b3b1b7f84ac88fa7a57901fd5b5b16be9a6619a1
[INFO] running `Command { std: "docker" "start" "-a" "e324ae4a62f667936dd67ae5b3b1b7f84ac88fa7a57901fd5b5b16be9a6619a1", 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 sbnf::tests::parse_terminals ... ok
[INFO] [stderr]      |
[INFO] [stdout] test compiler::codegen::tests::collect_concat ... ok
[INFO] [stderr] 1388 |         Variable(&'static str),
[INFO] [stdout] test compiler::tests::compile_syntax_parameters ... ok
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test sublime_syntax::tests::serialize_contexts ... ok
[INFO] [stderr]      |
[INFO] [stdout] test compiler::codegen::tests::collect_optional ... ok
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test sublime_syntax::tests::serialize_empty_syntax ... ok
[INFO] [stderr] 
[INFO] [stdout] test compiler::tests::compile_simple_repetition ... ok
[INFO] [stderr] warning: function is never used: `variable`
[INFO] [stdout] test sbnf::tests::parse_rules ... ok
[INFO] [stderr]     --> src/compiler/codegen.rs:1437:8
[INFO] [stdout] test sbnf::tests::parse_syntax_parameters ... ok
[INFO] [stderr]      |
[INFO] [stdout] test sublime_syntax::tests::serialize_variables ... ok
[INFO] [stderr] 1437 |     fn variable(s: &'static str) -> TestExpression {
[INFO] [stdout] test compiler::codegen::tests::collect_passive ... ok
[INFO] [stderr]      |        ^^^^^^^^
[INFO] [stdout] test sbnf::tests::parse_empty ... ok
[INFO] [stderr] 
[INFO] [stdout] test sbnf::tests::parse_headers ... ok
[INFO] [stderr] warning: function is never used: `m_var`
[INFO] [stdout] test compiler::codegen::tests::collect_repetition ... ok
[INFO] [stderr]     --> src/compiler/codegen.rs:1481:8
[INFO] [stdout] test compiler::codegen::tests::collect_alternation ... ok
[INFO] [stderr]      |
[INFO] [stdout] test compiler::tests::compile_simple_branch ... ok
[INFO] [stderr] 1481 |     fn m_var(s: &'static str, r: &[TestExpression]) -> TestMatch {
[INFO] [stdout] 
[INFO] [stderr]      |        ^^^^^
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 
[INFO] [stdout] 
[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-0ddb9daeaf69c572
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/syntax_tests-0ebd543fe9d25c60
[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:     0x55f095406370 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x55f095406370 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55f095406370 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x55f095406370 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x55f09542509c - core::fmt::write::h9ddafa4860d8adff
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stderr]    5:     0x55f095403a17 - std::io::Write::write_fmt::h1d2ee292d2b65481
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stderr]    6:     0x55f095408860 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x55f095408860 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]    8:     0x55f095408860 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stderr]    9:     0x55f0954085ac - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:219
[INFO] [stderr]   10:     0x55f095408ec3 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stderr]   11:     0x55f095408a99 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stderr]   12:     0x55f0954067fc - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   13:     0x55f095408a59 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stderr]   14:     0x55f0954243c1 - core::panicking::panic_fmt::h4e2659771ebc78eb
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/panicking.rs:85
[INFO] [stderr]   15:     0x55f0954241e3 - core::option::expect_none_failed::h448b58a024c2c33a
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/option.rs:1221
[INFO] [stderr]   16:     0x55f0953eb240 - core::result::Result<T,E>::unwrap::he8ffbc5fbb8eb8e8
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/result.rs:973
[INFO] [stderr]   17:     0x55f0953df232 - syntax_tests::main::ha4e94f5ec9bb48c8
[INFO] [stderr]                                at /opt/rustwide/workdir/tests/syntax_tests.rs:19
[INFO] [stderr]   18:     0x55f0953e28e2 - core::ops::function::FnOnce::call_once::h9355c97aaa01e673
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stderr]   19:     0x55f0953ec42a - std::sys_common::backtrace::__rust_begin_short_backtrace::hf35afe0bba279de7
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]   20:     0x55f0953e2626 - std::rt::lang_start::{{closure}}::h7d0a554809e98059
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:66
[INFO] [stderr]   21:     0x55f0954092c1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6a3209f124be2235
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:259
[INFO] [stderr]   22:     0x55f0954092c1 - std::panicking::try::do_call::h88ce358792b64df0
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stderr]   23:     0x55f0954092c1 - std::panicking::try::h6311c259678e50fc
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stderr]   24:     0x55f0954092c1 - std::panic::catch_unwind::h56c5716807d659a1
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stderr]   25:     0x55f0954092c1 - std::rt::lang_start_internal::h73711f37ecfcb277
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:51
[INFO] [stderr]   26:     0x55f0953e25f7 - std::rt::lang_start::h878625e13b61cb74
[INFO] [stderr]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:65
[INFO] [stderr]   27:     0x55f0953e107a - main
[INFO] [stderr]   28:     0x7f8c248470b3 - __libc_start_main
[INFO] [stderr]   29:     0x55f0953df0ce - _start
[INFO] [stderr]   30:                0x0 - <unknown>
[INFO] [stderr] error: test failed, to rerun pass '--test syntax_tests'
[INFO] running `Command { std: "docker" "inspect" "e324ae4a62f667936dd67ae5b3b1b7f84ac88fa7a57901fd5b5b16be9a6619a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e324ae4a62f667936dd67ae5b3b1b7f84ac88fa7a57901fd5b5b16be9a6619a1", kill_on_drop: false }`
[INFO] [stdout] e324ae4a62f667936dd67ae5b3b1b7f84ac88fa7a57901fd5b5b16be9a6619a1
