[INFO] fetching crate wren_rust 0.1.3...
[INFO] testing wren_rust-0.1.3 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate wren_rust 0.1.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate wren_rust 0.1.3 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", 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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", 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] b669e19a582973ab796ea61183f9d62442516b3d1361a191d55402b98c7a6bc0
[INFO] running `Command { std: "docker" "start" "-a" "b669e19a582973ab796ea61183f9d62442516b3d1361a191d55402b98c7a6bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b669e19a582973ab796ea61183f9d62442516b3d1361a191d55402b98c7a6bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b669e19a582973ab796ea61183f9d62442516b3d1361a191d55402b98c7a6bc0", kill_on_drop: false }`
[INFO] [stdout] b669e19a582973ab796ea61183f9d62442516b3d1361a191d55402b98c7a6bc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a2288e4e8b014c8e3d7ad6a2e76302148b9ee1c9641ecad50722be51279a257
[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" "8a2288e4e8b014c8e3d7ad6a2e76302148b9ee1c9641ecad50722be51279a257", kill_on_drop: false }`
[INFO] [stderr]    Compiling wren_rust v0.1.3 (/opt/rustwide/workdir)
[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-1bada7a09744d83e/build-script-build` (exit code: 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:     0x55eac710e720 - std::backtrace_rs::backtrace::libunwind::trace::h95fc93571932622e
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55eac710e720 - std::backtrace_rs::backtrace::trace_unsynchronized::h4d0b90afc33151fd
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55eac710e720 - std::sys_common::backtrace::_print_fmt::h93d302d001a3bf01
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55eac710e720 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7881e3a580134f9a
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55eac712c26c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]      5:     0x55eac710c1a2 - std::io::Write::write_fmt::h24485de26f355188
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]      6:     0x55eac71109e5 - std::sys_common::backtrace::_print::h3e3f9fed81bc11e9
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55eac71109e5 - std::sys_common::backtrace::print::hd22ac23fed5071c8
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55eac71109e5 - std::panicking::default_hook::{{closure}}::h1647bdcf68060e17
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55eac711053a - std::panicking::default_hook::hb08853b392b9404b
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55eac7111181 - std::panicking::rust_panic_with_hook::h3624ee29da369ede
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55eac7110c97 - std::panicking::begin_panic_handler::{{closure}}::hefcfcedcde6bb6d9
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x55eac710ebdc - std::sys_common::backtrace::__rust_end_short_backtrace::heb130cec93caa706
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55eac7110c29 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55eac712b611 - core::panicking::panic_fmt::hb15d6f55e8472f62
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55eac712b55d - core::panicking::panic::h5d1c61fed2502a5f
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x55eac70f85c1 - build_script_build::make_debug::h8270dcef0ebe7685
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:8:5
[INFO] [stderr]     17:     0x55eac70f8748 - build_script_build::main::ha5a73781e2044106
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:27:5
[INFO] [stderr]     18:     0x55eac70f404b - core::ops::function::FnOnce::call_once::h0b9582f3f91ff3a2
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55eac70f3b1e - std::sys_common::backtrace::__rust_begin_short_backtrace::h7dab3868f9ad8f29
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55eac70f5511 - std::rt::lang_start::{{closure}}::h66c9151e10d0bc63
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x55eac71115a7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h194d6aa01fb6b594
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55eac71115a7 - std::panicking::try::do_call::h4ef477456776cccb
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x55eac71115a7 - std::panicking::try::h7f2121b6bb3bbca4
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x55eac71115a7 - std::panic::catch_unwind::he974d0ca04309948
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/panic.rs:396:14
[INFO] [stderr]     25:     0x55eac71115a7 - std::rt::lang_start_internal::h36e9e78490120b9f
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x55eac70f54e7 - std::rt::lang_start::h131e649a74839a2d
[INFO] [stderr]                                  at /rustc/eafdee2dfae8c2233b74f98b123308be7ccefcc6/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x55eac70f88fa - main
[INFO] [stderr]     28:     0x7f96fa26a0b3 - __libc_start_main
[INFO] [stderr]     29:     0x55eac70f209e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "8a2288e4e8b014c8e3d7ad6a2e76302148b9ee1c9641ecad50722be51279a257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a2288e4e8b014c8e3d7ad6a2e76302148b9ee1c9641ecad50722be51279a257", kill_on_drop: false }`
[INFO] [stdout] 8a2288e4e8b014c8e3d7ad6a2e76302148b9ee1c9641ecad50722be51279a257