[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 try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdvc94ch%2Frust-c-wasm-lib" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dvc94ch/rust-c-wasm-lib on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-9/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.39
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.39
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.39
[INFO] [stderr]   Downloaded bumpalo v2.2.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.39
[INFO] [stderr]   Downloaded cbindgen v0.8.2
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dba0fd3835c00825521ccef81c5d2acab7bbd488573b848ca77b9e642d3980ec
[INFO] running `Command { std: "docker" "start" "-a" "dba0fd3835c00825521ccef81c5d2acab7bbd488573b848ca77b9e642d3980ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dba0fd3835c00825521ccef81c5d2acab7bbd488573b848ca77b9e642d3980ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dba0fd3835c00825521ccef81c5d2acab7bbd488573b848ca77b9e642d3980ec", kill_on_drop: false }`
[INFO] [stdout] dba0fd3835c00825521ccef81c5d2acab7bbd488573b848ca77b9e642d3980ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4000a2b514feb8a2b024c73a9572541e57cff8f68f760c26547dee75172d20a
[INFO] running `Command { std: "docker" "start" "-a" "d4000a2b514feb8a2b024c73a9572541e57cff8f68f760c26547dee75172d20a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.39
[INFO] [stderr]    Compiling bumpalo v2.2.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.39
[INFO] [stderr]     Checking fib v0.1.0 (/opt/rustwide/workdir/fib)
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling tempfile v3.0.7
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.39
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.39
[INFO] [stderr]    Compiling serde_derive v1.0.89
[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 toml v0.4.10
[INFO] [stderr]    Compiling serde_json v1.0.39
[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-7fd0ad4fdb36064e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, 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:     0x556e89ba1de0 - std::backtrace_rs::backtrace::libunwind::trace::h0f5cd2ee8b0d7274
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x556e89ba1de0 - std::backtrace_rs::backtrace::trace_unsynchronized::h06905b5aeda069a1
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x556e89ba1de0 - std::sys_common::backtrace::_print_fmt::h4fe4c7c875072f30
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x556e89ba1de0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hcc0746f004a9b7ef
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x556e89bc6a3c - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x556e89b9f2d5 - std::io::Write::write_fmt::h23dab4cc9ce72ee2
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x556e89ba451b - std::sys_common::backtrace::_print::h173dc702502d65d2
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x556e89ba451b - std::sys_common::backtrace::print::h61bd27c4742ba817
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x556e89ba451b - std::panicking::default_hook::{{closure}}::hcaae87f0495ae613
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x556e89ba3ff1 - std::panicking::default_hook::h0538e728ee080db0
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x556e89ba4c09 - std::panicking::rust_panic_with_hook::h3039e236b6ca482c
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:626:17
[INFO] [stderr]     11:     0x556e89ba46c7 - std::panicking::begin_panic_handler::{{closure}}::h884fbab544ffd91c
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x556e89ba22dc - std::sys_common::backtrace::__rust_end_short_backtrace::hdaf2e18ba3d91210
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x556e89ba4629 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x556e897492b1 - core::panicking::panic_fmt::hcf5f6d96e1dd7099
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x556e897493a3 - core::result::unwrap_failed::he898b02f57993c42
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/core/src/result.rs:1599:5
[INFO] [stderr]     16:     0x556e8977996e - core::result::Result<T,E>::unwrap::h59f73d8bea198e1f
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/core/src/result.rs:1281:23
[INFO] [stderr]     17:     0x556e8976f6b5 - cbindgen::bindgen::bindings::Bindings::write_to_file::h2fd6ec211c529fa4
[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:     0x556e8975c1de - build_script_build::main::h310f0b4062fa4d6a
[INFO] [stderr]                                  at /opt/rustwide/workdir/fib_c/build.rs:9:5
[INFO] [stderr]     19:     0x556e8975adfb - core::ops::function::FnOnce::call_once::hfa18f91d0e8d5538
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x556e8975aa9e - std::sys_common::backtrace::__rust_begin_short_backtrace::hb52fd48908a3a8bf
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x556e8975ab31 - std::rt::lang_start::{{closure}}::hcef217c29635181d
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/rt.rs:63:18
[INFO] [stderr]     22:     0x556e89ba51ea - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h61bcc1dec5918b7e
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x556e89ba51ea - std::panicking::try::do_call::h672d24f85ce22db4
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:401:40
[INFO] [stderr]     24:     0x556e89ba51ea - std::panicking::try::he383e7ef11604e58
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:365:19
[INFO] [stderr]     25:     0x556e89ba51ea - std::panic::catch_unwind::h502ac6058961e393
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panic.rs:434:14
[INFO] [stderr]     26:     0x556e89ba51ea - std::rt::lang_start_internal::{{closure}}::h851ee37bb5d99fdf
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/rt.rs:45:48
[INFO] [stderr]     27:     0x556e89ba51ea - std::panicking::try::do_call::h84f41bb3453bbd14
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:401:40
[INFO] [stderr]     28:     0x556e89ba51ea - std::panicking::try::h969c45dbbf2e4c94
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panicking.rs:365:19
[INFO] [stderr]     29:     0x556e89ba51ea - std::panic::catch_unwind::he40b1a4614f73e03
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/panic.rs:434:14
[INFO] [stderr]     30:     0x556e89ba51ea - std::rt::lang_start_internal::h0fbab25cccdb30d8
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/rt.rs:45:20
[INFO] [stderr]     31:     0x556e8975ab00 - std::rt::lang_start::h4b7d75aca9295e74
[INFO] [stderr]                                  at /rustc/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/library/std/src/rt.rs:62:5
[INFO] [stderr]     32:     0x556e8975c3ec - main
[INFO] [stderr]     33:     0x7fea8fafd0b3 - __libc_start_main
[INFO] [stderr]     34:     0x556e89749a6e - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "d4000a2b514feb8a2b024c73a9572541e57cff8f68f760c26547dee75172d20a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4000a2b514feb8a2b024c73a9572541e57cff8f68f760c26547dee75172d20a", kill_on_drop: false }`
[INFO] [stdout] d4000a2b514feb8a2b024c73a9572541e57cff8f68f760c26547dee75172d20a