[INFO] cloning repository https://github.com/dvc94ch/rust-c-wasm-lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dvc94ch/rust-c-wasm-lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdvc94ch%2Frust-c-wasm-lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdvc94ch%2Frust-c-wasm-lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34d86a17a78574fea6f001cd6ba167f7d7e7cbf6
[INFO] checking dvc94ch/rust-c-wasm-lib against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdvc94ch%2Frust-c-wasm-lib" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dvc94ch/rust-c-wasm-lib on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dvc94ch/rust-c-wasm-lib
[INFO] finished tweaking git repo https://github.com/dvc94ch/rust-c-wasm-lib
[INFO] tweaked toml for git repo https://github.com/dvc94ch/rust-c-wasm-lib written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/dvc94ch/rust-c-wasm-lib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e9a360e07a173b35c122ed2ec7c79e174c6b780dc60cdde1a5d3ea6d89afc24
[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" "7e9a360e07a173b35c122ed2ec7c79e174c6b780dc60cdde1a5d3ea6d89afc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e9a360e07a173b35c122ed2ec7c79e174c6b780dc60cdde1a5d3ea6d89afc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e9a360e07a173b35c122ed2ec7c79e174c6b780dc60cdde1a5d3ea6d89afc24", kill_on_drop: false }`
[INFO] [stdout] 7e9a360e07a173b35c122ed2ec7c79e174c6b780dc60cdde1a5d3ea6d89afc24
[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=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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5dd94b150cd8d81988664f91ba7db4915ae112d17f3f1fc06222667ad73bc26b
[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" "5dd94b150cd8d81988664f91ba7db4915ae112d17f3f1fc06222667ad73bc26b", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.39
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling bumpalo v2.2.1
[INFO] [stderr]     Checking fib v0.1.0 (/opt/rustwide/workdir/fib)
[INFO] [stderr]    Compiling wasm-bindgen v0.2.39
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling tempfile v3.0.7
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.39
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.39
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.39
[INFO] [stderr]     Checking fib_wasm v0.1.0 (/opt/rustwide/workdir/fib_wasm)
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling cbindgen v0.8.2
[INFO] [stderr]    Compiling fib_c v0.1.0 (/opt/rustwide/workdir/fib_c)
[INFO] [stderr] error: failed to run custom build command for `fib_c v0.1.0 (/opt/rustwide/workdir/fib_c)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/fib_c-f27cb0c8aa13ccfb/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cbindgen-0.8.2/src/bindgen/bindings.rs:66:43
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55ce324af220 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55ce324af220 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55ce324af220 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55ce324af220 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd8c307a38b9bab04
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55ce324d1afc - core::fmt::write::h3868db8542c90941
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/fmt/mod.rs:1096:17
[INFO] [stderr]      5:     0x55ce324abeb2 - std::io::Write::write_fmt::hab90295d5a0f197d
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/io/mod.rs:1568:15
[INFO] [stderr]      6:     0x55ce324b1985 - std::sys_common::backtrace::_print::h19224910b8700cf1
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55ce324b1985 - std::sys_common::backtrace::print::h25dedfa68c5fb84a
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55ce324b1985 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55ce324b14e3 - std::panicking::default_hook::he65cee71c4209f0c
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55ce324b2146 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:595:17
[INFO] [stderr]     11:     0x55ce324b1c67 - std::panicking::begin_panic_handler::{{closure}}::h9b9fecf185178864
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55ce324af6bc - std::sys_common::backtrace::__rust_end_short_backtrace::h57be46a42dc7f24b
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55ce324b1bc9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55ce324d04c1 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55ce324d02e3 - core::option::expect_none_failed::hc6d6d4cea4fdc285
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/option.rs:1300:5
[INFO] [stderr]     16:     0x55ce32037c4b - core::result::Result<T,E>::unwrap::h5468dd37a78efd59
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x55ce3202a5dc - cbindgen::bindgen::bindings::Bindings::write_to_file::h5f6ec29dc1f1bb35
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cbindgen-0.8.2/src/bindgen/bindings.rs:66:24
[INFO] [stderr]     18:     0x55ce32039502 - build_script_build::main::h945e27a823a24645
[INFO] [stderr]                                  at /opt/rustwide/workdir/fib_c/build.rs:9:5
[INFO] [stderr]     19:     0x55ce3201c3db - core::ops::function::FnOnce::call_once::h8f6bcb8ee09616f5
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x55ce3201822e - std::sys_common::backtrace::__rust_begin_short_backtrace::h0dd668c2391ac96a
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x55ce32037801 - std::rt::lang_start::{{closure}}::ha0318e1af2bd24af
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/rt.rs:66:18
[INFO] [stderr]     22:     0x55ce324b2637 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2c4fd7d4128112a8
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x55ce324b2637 - std::panicking::try::do_call::h41fb7dbbbe7bece6
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:379:40
[INFO] [stderr]     24:     0x55ce324b2637 - std::panicking::try::hd38008ccba72bce1
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:343:19
[INFO] [stderr]     25:     0x55ce324b2637 - std::panic::catch_unwind::h057e765cd60f2d13
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panic.rs:431:14
[INFO] [stderr]     26:     0x55ce324b2637 - std::rt::lang_start_internal::hdb9d0b9d2cdcda8b
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/rt.rs:51:25
[INFO] [stderr]     27:     0x55ce320377d7 - std::rt::lang_start::h6b000b1188b9f9dc
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/rt.rs:65:5
[INFO] [stderr]     28:     0x55ce3203978a - main
[INFO] [stderr]     29:     0x7f2f47eca0b3 - __libc_start_main
[INFO] [stderr]     30:     0x55ce320070de - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "5dd94b150cd8d81988664f91ba7db4915ae112d17f3f1fc06222667ad73bc26b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dd94b150cd8d81988664f91ba7db4915ae112d17f3f1fc06222667ad73bc26b", kill_on_drop: false }`
[INFO] [stdout] 5dd94b150cd8d81988664f91ba7db4915ae112d17f3f1fc06222667ad73bc26b