[INFO] cloning repository https://github.com/htynkn/flab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/htynkn/flab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtynkn%2Fflab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtynkn%2Fflab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f030c0aebe1a49f1baf447c2e470aaed59ff219
[INFO] checking htynkn/flab against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtynkn%2Fflab" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/htynkn/flab on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/htynkn/flab
[INFO] finished tweaking git repo https://github.com/htynkn/flab
[INFO] tweaked toml for git repo https://github.com/htynkn/flab written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/htynkn/flab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clang-sys v0.29.3
[INFO] [stderr]   Downloaded thiserror-impl v1.0.29
[INFO] [stderr]   Downloaded thiserror v1.0.29
[INFO] [stderr]   Downloaded dart-bindgen v0.1.8
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded serde_derive v1.0.130
[INFO] [stderr]   Downloaded serde v1.0.130
[INFO] [stderr]   Downloaded clap v2.33.3
[INFO] [stderr]   Downloaded syn v1.0.76
[INFO] [stderr]   Downloaded serde_json v1.0.67
[INFO] [stderr]   Downloaded libc v0.2.101
[INFO] [stderr]   Downloaded cbindgen v0.14.3
[INFO] [stderr]   Downloaded clang v0.24.0
[INFO] [stderr]   Downloaded unicode-width v0.1.8
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b5cf983c82f6ec8d16b6ced7250331bcc89058195b5b9cc5038c98d90b8169f
[INFO] running `Command { std: "docker" "start" "-a" "0b5cf983c82f6ec8d16b6ced7250331bcc89058195b5b9cc5038c98d90b8169f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b5cf983c82f6ec8d16b6ced7250331bcc89058195b5b9cc5038c98d90b8169f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b5cf983c82f6ec8d16b6ced7250331bcc89058195b5b9cc5038c98d90b8169f", kill_on_drop: false }`
[INFO] [stdout] 0b5cf983c82f6ec8d16b6ced7250331bcc89058195b5b9cc5038c98d90b8169f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4549482045f3a0de9500d17b0c9c9a85955e18a5f163b1a32f099532e3ecc70c
[INFO] running `Command { std: "docker" "start" "-a" "4549482045f3a0de9500d17b0c9c9a85955e18a5f163b1a32f099532e3ecc70c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling cbindgen v0.14.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/native/adder)
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling clang v0.24.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling dart-bindgen v0.1.8
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling adder-ffi v0.1.0 (/opt/rustwide/workdir/native/adder-ffi)
[INFO] [stderr] error: failed to run custom build command for `adder-ffi v0.1.0 (/opt/rustwide/workdir/native/adder-ffi)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/adder-ffi-c10c35db5cffec78/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at native/adder-ffi/build.rs:33:10:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Io(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x556685b63f15 - std::backtrace_rs::backtrace::libunwind::trace::hb0d415bcff8c04ff
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x556685b63f15 - std::backtrace_rs::backtrace::trace_unsynchronized::hd3beb7af6a65b2fb
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x556685b63f15 - std::sys_common::backtrace::_print_fmt::hb94d89680d7f5d1c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x556685b63f15 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h42d21e2ba62fd274
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x556685b8e42b - core::fmt::rt::Argument::fmt::h8932bbbd2b9c37fe
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x556685b8e42b - core::fmt::write::h672f14b769052340
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/fmt/mod.rs:1153:17
[INFO] [stderr]      6:     0x556685b616ff - std::io::Write::write_fmt::h4d626b1d019eca5c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/io/mod.rs:1843:15
[INFO] [stderr]      7:     0x556685b63cee - std::sys_common::backtrace::_print::h745e446c2e03c5ca
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x556685b63cee - std::sys_common::backtrace::print::hf0f0fa4fb70dca2c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x556685b656f9 - std::panicking::default_hook::{{closure}}::h607769b198639ae5
[INFO] [stderr]     10:     0x556685b65463 - std::panicking::default_hook::h1e5811a5a9298ba1
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x556685b65ccc - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h703c526b9bee37cb
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/alloc/src/boxed.rs:2032:9
[INFO] [stderr]     12:     0x556685b65ccc - std::panicking::rust_panic_with_hook::hd0c5dc40875c06ef
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:793:13
[INFO] [stderr]     13:     0x556685b65a76 - std::panicking::begin_panic_handler::{{closure}}::hde3f6d4bced89f43
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:658:13
[INFO] [stderr]     14:     0x556685b643d9 - std::sys_common::backtrace::__rust_end_short_backtrace::h88e846e54ebde2e3
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     15:     0x556685b657a7 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:646:5
[INFO] [stderr]     16:     0x556685793fd6 - core::panicking::panic_fmt::h5ffad3fb9ad671e0
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/panicking.rs:72:14
[INFO] [stderr]     17:     0x556685794546 - core::result::unwrap_failed::hb58638a1c26ab909
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/result.rs:1654:5
[INFO] [stderr]     18:     0x5566857ce7c2 - build_script_build::main::h1a2bb3344e9c085d
[INFO] [stderr]     19:     0x5566857cf4c3 - core::ops::function::FnOnce::call_once::h5a976d6cd761808c
[INFO] [stderr]     20:     0x5566857c80a6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h21c813ab5c361a4f
[INFO] [stderr]     21:     0x5566857c9d39 - std::rt::lang_start::{{closure}}::hb52188c2cabc5875
[INFO] [stderr]     22:     0x556685b5ddc1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hf24a18568366726b
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x556685b5ddc1 - std::panicking::try::do_call::hfe98fb6a5c700fa1
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:553:40
[INFO] [stderr]     24:     0x556685b5ddc1 - std::panicking::try::h887aaa509ba266ad
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:517:19
[INFO] [stderr]     25:     0x556685b5ddc1 - std::panic::catch_unwind::hdb24f00ea5a307a8
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panic.rs:146:14
[INFO] [stderr]     26:     0x556685b5ddc1 - std::rt::lang_start_internal::{{closure}}::hacbffc0b2f55d28c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/rt.rs:148:48
[INFO] [stderr]     27:     0x556685b5ddc1 - std::panicking::try::do_call::hc810c59098be8c17
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:553:40
[INFO] [stderr]     28:     0x556685b5ddc1 - std::panicking::try::h0d072b82be5f3f03
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:517:19
[INFO] [stderr]     29:     0x556685b5ddc1 - std::panic::catch_unwind::hb0e7e36556665803
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panic.rs:146:14
[INFO] [stderr]     30:     0x556685b5ddc1 - std::rt::lang_start_internal::h4207974af80a0725
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/rt.rs:148:20
[INFO] [stderr]     31:     0x5566857c9d17 - std::rt::lang_start::h9387d0758fce6a45
[INFO] [stderr]     32:     0x5566857ce8c5 - main
[INFO] [stderr]     33:     0x7f7f87affd90 - <unknown>
[INFO] [stderr]     34:     0x7f7f87affe40 - __libc_start_main
[INFO] [stderr]     35:     0x5566857948e5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4549482045f3a0de9500d17b0c9c9a85955e18a5f163b1a32f099532e3ecc70c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4549482045f3a0de9500d17b0c9c9a85955e18a5f163b1a32f099532e3ecc70c", kill_on_drop: false }`
[INFO] [stdout] 4549482045f3a0de9500d17b0c9c9a85955e18a5f163b1a32f099532e3ecc70c