[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] testing htynkn/flab against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtynkn%2Fflab" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[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-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/htynkn/flab on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e923eb285eae7be7b05aa170f12bca6179d0a7048b00c3b292e235e826786b0e
[INFO] running `Command { std: "docker" "start" "-a" "e923eb285eae7be7b05aa170f12bca6179d0a7048b00c3b292e235e826786b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e923eb285eae7be7b05aa170f12bca6179d0a7048b00c3b292e235e826786b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e923eb285eae7be7b05aa170f12bca6179d0a7048b00c3b292e235e826786b0e", kill_on_drop: false }`
[INFO] [stdout] e923eb285eae7be7b05aa170f12bca6179d0a7048b00c3b292e235e826786b0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0964b7eb52fbc142b1377c937b8eea1e13d98ee1dd5fac986a01004628fc76ce
[INFO] running `Command { std: "docker" "start" "-a" "0964b7eb52fbc142b1377c937b8eea1e13d98ee1dd5fac986a01004628fc76ce", 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 glob v0.3.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling strsim v0.8.0
[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 bitflags v1.3.2
[INFO] [stderr]    Compiling cbindgen v0.14.3
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling adder v0.1.0 (/opt/rustwide/workdir/native/adder)
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling quote v1.0.9
[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-6de8c99d6e4e614b/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (740) 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:     0x608f6e4deb1a - std[e72de78501789eb0]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x608f6e4deb1a - std[e72de78501789eb0]::backtrace_rs::backtrace::trace_unsynchronized::<std[e72de78501789eb0]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x608f6e4deb1a - std[e72de78501789eb0]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x608f6e4deb1a - <<std[e72de78501789eb0]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6aaeda2c7ad07a48]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x608f6e4f5dba - <core[6aaeda2c7ad07a48]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x608f6e4f5dba - core[6aaeda2c7ad07a48]::fmt::write
[INFO] [stderr]      6:     0x608f6e4e3f92 - std[e72de78501789eb0]::io::default_write_fmt::<std[e72de78501789eb0]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x608f6e4e3f92 - <std[e72de78501789eb0]::sys::stdio::unix::Stderr as std[e72de78501789eb0]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x608f6e4c0b8f - <std[e72de78501789eb0]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x608f6e4c0b8f - std[e72de78501789eb0]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x608f6e4d9551 - std[e72de78501789eb0]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x608f6e4d9802 - <alloc[28d2dab30c1dc666]::boxed::Box<dyn for<'a, 'b> core[6aaeda2c7ad07a48]::ops::function::Fn<(&'a std[e72de78501789eb0]::panic::PanicHookInfo<'b>,), Output = ()> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::marker::Send> as core[6aaeda2c7ad07a48]::ops::function::Fn<(&std[e72de78501789eb0]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/alloc/src/boxed.rs:2254:9
[INFO] [stderr]     12:     0x608f6e4d9802 - std[e72de78501789eb0]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:833:13
[INFO] [stderr]     13:     0x608f6e4c0c48 - std[e72de78501789eb0]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:698:13
[INFO] [stderr]     14:     0x608f6e4b8469 - std[e72de78501789eb0]::sys::backtrace::__rust_end_short_backtrace::<std[e72de78501789eb0]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     15:     0x608f6e4c153d - __rustc[78a4cf188af856fc]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:689:5
[INFO] [stderr]     16:     0x608f6e4f662c - core[6aaeda2c7ad07a48]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/panicking.rs:80:14
[INFO] [stderr]     17:     0x608f6e4f6372 - core[6aaeda2c7ad07a48]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/result.rs:1867:5
[INFO] [stderr]     18:     0x608f6e17b757 - build_script_build[bc17c6c1c506d51f]::main
[INFO] [stderr]     19:     0x608f6e16f3e3 - <fn() as core[6aaeda2c7ad07a48]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x608f6e168566 - std[e72de78501789eb0]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     21:     0x608f6e16de59 - std[e72de78501789eb0]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     22:     0x608f6e4d8694 - <&dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe as core[6aaeda2c7ad07a48]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x608f6e4d8694 - std[e72de78501789eb0]::panicking::catch_unwind::do_call::<&dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:581:40
[INFO] [stderr]     24:     0x608f6e4d8694 - std[e72de78501789eb0]::panicking::catch_unwind::<i32, &dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:544:19
[INFO] [stderr]     25:     0x608f6e4d8694 - std[e72de78501789eb0]::panic::catch_unwind::<&dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x608f6e4d8694 - std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x608f6e4d8694 - std[e72de78501789eb0]::panicking::catch_unwind::do_call::<std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:581:40
[INFO] [stderr]     28:     0x608f6e4d8694 - std[e72de78501789eb0]::panicking::catch_unwind::<isize, std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:544:19
[INFO] [stderr]     29:     0x608f6e4d8694 - std[e72de78501789eb0]::panic::catch_unwind::<std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x608f6e4d8694 - std[e72de78501789eb0]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x608f6e16c631 - std[e72de78501789eb0]::rt::lang_start::<()>
[INFO] [stderr]     32:     0x608f6e17bc35 - main
[INFO] [stderr]     33:     0x7ac272a0f1ca - <unknown>
[INFO] [stderr]     34:     0x7ac272a0f28b - __libc_start_main
[INFO] [stderr]     35:     0x608f6e142c45 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "0964b7eb52fbc142b1377c937b8eea1e13d98ee1dd5fac986a01004628fc76ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0964b7eb52fbc142b1377c937b8eea1e13d98ee1dd5fac986a01004628fc76ce", kill_on_drop: false }`
[INFO] [stdout] 0964b7eb52fbc142b1377c937b8eea1e13d98ee1dd5fac986a01004628fc76ce