[INFO] fetching crate wren_rust 0.1.3...
[INFO] checking wren_rust-0.1.3 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate wren_rust 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate wren_rust 0.1.3 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wren_rust 0.1.3
[INFO] finished tweaking crates.io crate wren_rust 0.1.3
[INFO] tweaked toml for crates.io crate wren_rust 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5020227743f7757b35d591d3f90fa88dd22aa6df0f59c9be5321eaa1423a011f
[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" "5020227743f7757b35d591d3f90fa88dd22aa6df0f59c9be5321eaa1423a011f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5020227743f7757b35d591d3f90fa88dd22aa6df0f59c9be5321eaa1423a011f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5020227743f7757b35d591d3f90fa88dd22aa6df0f59c9be5321eaa1423a011f", kill_on_drop: false }`
[INFO] [stdout] 5020227743f7757b35d591d3f90fa88dd22aa6df0f59c9be5321eaa1423a011f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd907a486a683cc8fe4e516d0e303bfaa56785be195a7ff451e1dce830db9ccb
[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" "cd907a486a683cc8fe4e516d0e303bfaa56785be195a7ff451e1dce830db9ccb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling wren_rust v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr] error: failed to run custom build command for `wren_rust v0.1.3 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/wren_rust-a29f83f8531176bf/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   make[1]: Entering directory '/opt/rustwide/workdir/wren'
[INFO] [stderr]           cc src/optional/wren_opt_meta.c    -O0 -DDEBUG -g -std=c99 -fPIC
[INFO] [stderr]   make[1]: Leaving directory '/opt/rustwide/workdir/wren'
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   mkdir: cannot create directory 'build': Read-only file system
[INFO] [stderr]   make[1]: *** [util/wren.mk:200: build/debug/optional/wren_opt_meta.o] Error 1
[INFO] [stderr]   make: *** [Makefile:20: debug] Error 2
[INFO] [stderr]   thread 'main' panicked at 'assertion failed: status.unwrap().success()', build.rs:8:5
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55fa0a100b20 - std::backtrace_rs::backtrace::libunwind::trace::hdcf4f90f85129e83
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55fa0a100b20 - std::backtrace_rs::backtrace::trace_unsynchronized::h2669e30cb82f6732
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55fa0a100b20 - std::sys_common::backtrace::_print_fmt::hfbda19e17f6db318
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55fa0a100b20 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1a8751bf59281272
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55fa0a11df8f - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x55fa0a0ff005 - std::io::Write::write_fmt::hd7dd3a1df9b6befb
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]      6:     0x55fa0a10275b - std::sys_common::backtrace::_print::h551e9ec8a9fa8106
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55fa0a10275b - std::sys_common::backtrace::print::ha4b1c5e95fa040b3
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55fa0a10275b - std::panicking::default_hook::{{closure}}::h0b34c9ab7fb9f857
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55fa0a10223d - std::panicking::default_hook::h3067e8318decd17a
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55fa0a102d0d - std::panicking::rust_panic_with_hook::h81b8facc50f34daa
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55fa0a1028d7 - std::panicking::begin_panic_handler::{{closure}}::ha376ab85d95a000e
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x55fa0a100fdc - std::sys_common::backtrace::__rust_end_short_backtrace::h6795c8afdd1a77e6
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55fa0a102869 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55fa0a0e81a1 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55fa0a0e80ed - core::panicking::panic::h3de4db67bd397eb3
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x55fa0a0eaa80 - build_script_build::make_debug::h6846bb16ae486de0
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:8:5
[INFO] [stderr]     17:     0x55fa0a0eac19 - build_script_build::main::hba3ca41bf3f27a26
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:27:5
[INFO] [stderr]     18:     0x55fa0a0ecc0b - core::ops::function::FnOnce::call_once::hc3ab020619896db5
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55fa0a0eb36e - std::sys_common::backtrace::__rust_begin_short_backtrace::hf5efdb61de6f6281
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55fa0a0ee021 - std::rt::lang_start::{{closure}}::hb7303de30081d07b
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/rt.rs:49:18
[INFO] [stderr]     21:     0x55fa0a10310a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3b8c329143d7638a
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55fa0a10310a - std::panicking::try::do_call::h4b72c261b4eefc1b
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x55fa0a10310a - std::panicking::try::h703d31b7896cbd49
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x55fa0a10310a - std::panic::catch_unwind::h37cad9b35388a915
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x55fa0a10310a - std::rt::lang_start_internal::hab5a8a909af4f90e
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/rt.rs:34:21
[INFO] [stderr]     26:     0x55fa0a0ee000 - std::rt::lang_start::h5889f01c3629d6e6
[INFO] [stderr]                                  at /rustc/50e1dc1536264ab71c0850f346b12309477f29f7/library/std/src/rt.rs:48:5
[INFO] [stderr]     27:     0x55fa0a0eadcc - main
[INFO] [stderr]     28:     0x7f1ab50ca0b3 - __libc_start_main
[INFO] [stderr]     29:     0x55fa0a0e889e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cd907a486a683cc8fe4e516d0e303bfaa56785be195a7ff451e1dce830db9ccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd907a486a683cc8fe4e516d0e303bfaa56785be195a7ff451e1dce830db9ccb", kill_on_drop: false }`
[INFO] [stdout] cd907a486a683cc8fe4e516d0e303bfaa56785be195a7ff451e1dce830db9ccb