[INFO] cloning repository https://github.com/emesare/flatbuffers-bug-0
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emesare/flatbuffers-bug-0" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femesare%2Fflatbuffers-bug-0", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femesare%2Fflatbuffers-bug-0'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12a516c07b9a7de2f80a6baf429c5e280b6cbf45
[INFO] checking emesare/flatbuffers-bug-0 against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femesare%2Fflatbuffers-bug-0" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/emesare/flatbuffers-bug-0
[INFO] finished tweaking git repo https://github.com/emesare/flatbuffers-bug-0
[INFO] tweaked toml for git repo https://github.com/emesare/flatbuffers-bug-0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/emesare/flatbuffers-bug-0 on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/emesare/flatbuffers-bug-0 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flatc-rust v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b57a35f2f85ee75911e1f60b821e5d0b93f226bf003f3032d4379046d8a8c051
[INFO] running `Command { std: "docker" "start" "-a" "b57a35f2f85ee75911e1f60b821e5d0b93f226bf003f3032d4379046d8a8c051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b57a35f2f85ee75911e1f60b821e5d0b93f226bf003f3032d4379046d8a8c051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b57a35f2f85ee75911e1f60b821e5d0b93f226bf003f3032d4379046d8a8c051", kill_on_drop: false }`
[INFO] [stdout] b57a35f2f85ee75911e1f60b821e5d0b93f226bf003f3032d4379046d8a8c051
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17930232042b5d84b0056408fdd29ebc8468c12b8e80ead8ddc52455e60d7f84
[INFO] running `Command { std: "docker" "start" "-a" "17930232042b5d84b0056408fdd29ebc8468c12b8e80ead8ddc52455e60d7f84", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]    Compiling flatc-rust v0.2.0
[INFO] [stderr]    Compiling flatbuffers-bug-0 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr] error: failed to run custom build command for `flatbuffers-bug-0 v0.1.0 (/opt/rustwide/workdir)`
[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/flatbuffers-bug-0-fc63d2cbf95f2f59/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=bug.fbs.fbs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at build.rs:10:6:
[INFO] [stderr]   flatc: Custom { kind: NotFound, error: "failed to spawn `\"flatc\" \"--version\"`: No such file or directory (os error 2)" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x59c9dcdfaeb2 - std::backtrace_rs::backtrace::libunwind::trace::h7c9c9944126a821f
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x59c9dcdfaeb2 - std::backtrace_rs::backtrace::trace_unsynchronized::h170d06432c000dc5
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x59c9dcdfaeb2 - std::sys::backtrace::_print_fmt::h2ae817d60fd9b9bf
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x59c9dcdfaeb2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h604797cc2765dcf5
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x59c9dce1ba13 - core::fmt::rt::Argument::fmt::h099e6bfe8655602e
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x59c9dce1ba13 - core::fmt::write::h58d760b418f38fd2
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x59c9dcdf8873 - std::io::default_write_fmt::h245aa9d6e2badab4
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x59c9dcdf8873 - std::io::Write::write_fmt::hfd0bf28604f7eac8
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x59c9dcdfad02 - std::sys::backtrace::BacktraceLock::print::h8b10b93fd9282a1e
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x59c9dcdfbe13 - std::panicking::default_hook::{{closure}}::hd6d3be7663c01d36
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x59c9dcdfbbf5 - std::panicking::default_hook::hf60d12f37dd790e9
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x59c9dcdfc6e5 - std::panicking::rust_panic_with_hook::ha8c05cc3918ec358
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x59c9dcdfc57a - std::panicking::begin_panic_handler::{{closure}}::hfb4e5dcc0bd7b35e
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x59c9dcdfb3a9 - std::sys::backtrace::__rust_end_short_backtrace::h3a1a89050ed6cbea
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x59c9dcdfc20d - __rustc[78fd1b8d7f62ba2f]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x59c9dce1aa10 - core::panicking::panic_fmt::h36d6fe1e87e1d519
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x59c9dce1ada6 - core::result::unwrap_failed::h8968387f4b1c8dc3
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/core/src/result.rs:1765:5
[INFO] [stderr]     17:     0x59c9dcdca2a0 - core::result::Result<T,E>::expect::h43e97225b76ea5ba
[INFO] [stderr]     18:     0x59c9dcdca437 - build_script_build::main::h9f22e5da0819b57b
[INFO] [stderr]     19:     0x59c9dcdca233 - core::ops::function::FnOnce::call_once::hd8ed1617a97f014e
[INFO] [stderr]     20:     0x59c9dcdca1d6 - std::sys::backtrace::__rust_begin_short_backtrace::hd1020b6652c89a90
[INFO] [stderr]     21:     0x59c9dcdca1b9 - std::rt::lang_start::{{closure}}::h952ce356e9b3d08e
[INFO] [stderr]     22:     0x59c9dcdf52b0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h9ef4507468940c31
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     23:     0x59c9dcdf52b0 - std::panicking::catch_unwind::do_call::hdd75dc0e2353ad9c
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:589:40
[INFO] [stderr]     24:     0x59c9dcdf52b0 - std::panicking::catch_unwind::h9332e26a98363992
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:552:19
[INFO] [stderr]     25:     0x59c9dcdf52b0 - std::panic::catch_unwind::hcae507cf9a0151cf
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x59c9dcdf52b0 - std::rt::lang_start_internal::{{closure}}::h6322c67864b470a2
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x59c9dcdf52b0 - std::panicking::catch_unwind::do_call::ha729e14b2aaecdea
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:589:40
[INFO] [stderr]     28:     0x59c9dcdf52b0 - std::panicking::catch_unwind::h5cf23490df860541
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panicking.rs:552:19
[INFO] [stderr]     29:     0x59c9dcdf52b0 - std::panic::catch_unwind::ha56c076a5981a367
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x59c9dcdf52b0 - std::rt::lang_start_internal::h8504f4310be4329d
[INFO] [stderr]                                  at /rustc/b56aaec52bc0fa35591a872fb4aac81f606e265c/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x59c9dcdca1a1 - std::rt::lang_start::h41a56507c42ec8ff
[INFO] [stderr]     32:     0x59c9dcdca455 - main
[INFO] [stderr]     33:     0x70d2a03b11ca - <unknown>
[INFO] [stderr]     34:     0x70d2a03b128b - __libc_start_main
[INFO] [stderr]     35:     0x59c9dcdca0b5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "17930232042b5d84b0056408fdd29ebc8468c12b8e80ead8ddc52455e60d7f84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17930232042b5d84b0056408fdd29ebc8468c12b8e80ead8ddc52455e60d7f84", kill_on_drop: false }`
[INFO] [stdout] 17930232042b5d84b0056408fdd29ebc8468c12b8e80ead8ddc52455e60d7f84