[INFO] cloning repository https://github.com/ailisp/test-flatdata
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ailisp/test-flatdata" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Failisp%2Ftest-flatdata", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Failisp%2Ftest-flatdata'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc6764c520b14b873691e25ccfd83996d64f0cd8
[INFO] checking ailisp/test-flatdata against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Failisp%2Ftest-flatdata" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ailisp/test-flatdata on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ailisp/test-flatdata
[INFO] finished tweaking git repo https://github.com/ailisp/test-flatdata
[INFO] tweaked toml for git repo https://github.com/ailisp/test-flatdata written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ailisp/test-flatdata already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flatdata v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65ba3185229b93f61582a9c8b4954463dc2dd642d4a908598f734af223657ec3
[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" "65ba3185229b93f61582a9c8b4954463dc2dd642d4a908598f734af223657ec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65ba3185229b93f61582a9c8b4954463dc2dd642d4a908598f734af223657ec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ba3185229b93f61582a9c8b4954463dc2dd642d4a908598f734af223657ec3", kill_on_drop: false }`
[INFO] [stdout] 65ba3185229b93f61582a9c8b4954463dc2dd642d4a908598f734af223657ec3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1993fadccd02f12c284b55228fece254f86a54f5ab3a64820f987840e37bbe1f
[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" "1993fadccd02f12c284b55228fece254f86a54f5ab3a64820f987840e37bbe1f", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]     Checking flatdata v0.5.1
[INFO] [stderr]    Compiling test-flatdata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `test-flatdata v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/test-flatdata-fb8acded4d9ce720/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   The virtual environment was not created successfully because ensurepip is not
[INFO] [stderr]   available.  On Debian/Ubuntu systems, you need to install the python3-venv
[INFO] [stderr]   package using the following command.
[INFO] [stderr] 
[INFO] [stderr]       apt-get install python3-venv
[INFO] [stderr] 
[INFO] [stderr]   You may need to use sudo with that command.  After installing the python3-venv
[INFO] [stderr]   package, recreate your virtual environment.
[INFO] [stderr] 
[INFO] [stderr]   Failing command: ['/opt/rustwide/target/debug/build/test-flatdata-608a16bb5099fed6/out/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   creating python virtualenv
[INFO] [stderr]   installing flatdata-generator from PyPI
[INFO] [stderr]   thread 'main' panicked at 'generator failed: PythonError(Os { code: 2, kind: NotFound, message: "No such file or directory" })', build.rs:6:6
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55993969a380 - std::backtrace_rs::backtrace::libunwind::trace::hdcf4f90f85129e83
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55993969a380 - std::backtrace_rs::backtrace::trace_unsynchronized::h2669e30cb82f6732
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55993969a380 - std::sys_common::backtrace::_print_fmt::hfbda19e17f6db318
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55993969a380 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1a8751bf59281272
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5599396b88ef - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x559939697c85 - std::io::Write::write_fmt::hd7dd3a1df9b6befb
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]      6:     0x55993969c04b - std::sys_common::backtrace::_print::h551e9ec8a9fa8106
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55993969c04b - std::sys_common::backtrace::print::ha4b1c5e95fa040b3
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55993969c04b - std::panicking::default_hook::{{closure}}::h0b34c9ab7fb9f857
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55993969bb2d - std::panicking::default_hook::h3067e8318decd17a
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55993969c5fd - std::panicking::rust_panic_with_hook::h81b8facc50f34daa
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55993969c1f7 - std::panicking::begin_panic_handler::{{closure}}::ha376ab85d95a000e
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55993969a83c - std::sys_common::backtrace::__rust_end_short_backtrace::h6795c8afdd1a77e6
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55993969c159 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x559939662091 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x559939662123 - core::result::unwrap_failed::hf79563fef9d11ab8
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/core/src/result.rs:1355:5
[INFO] [stderr]     16:     0x55993966669d - core::result::Result<T,E>::expect::h97533709af68f6ab
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/core/src/result.rs:997:23
[INFO] [stderr]     17:     0x5599396664ed - build_script_build::main::h0f40720e92962608
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:2:5
[INFO] [stderr]     18:     0x5599396689bb - core::ops::function::FnOnce::call_once::hf1e1458978a6a6d9
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x559939665fce - std::sys_common::backtrace::__rust_begin_short_backtrace::he02e07f14519b63c
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x559939668531 - std::rt::lang_start::{{closure}}::hbf48976e2dbdfc23
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/rt.rs:49:18
[INFO] [stderr]     21:     0x55993969c9fa - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3b8c329143d7638a
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55993969c9fa - std::panicking::try::do_call::h4b72c261b4eefc1b
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x55993969c9fa - std::panicking::try::h703d31b7896cbd49
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x55993969c9fa - std::panic::catch_unwind::h37cad9b35388a915
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x55993969c9fa - std::rt::lang_start_internal::hab5a8a909af4f90e
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/rt.rs:34:21
[INFO] [stderr]     26:     0x559939668510 - std::rt::lang_start::h052961cd766ff0b8
[INFO] [stderr]                                  at /rustc/6f8a6450478f69b8510c8976ab6c2a70b3b0e47c/library/std/src/rt.rs:48:5
[INFO] [stderr]     27:     0x55993966655c - main
[INFO] [stderr]     28:     0x7f51635840b3 - __libc_start_main
[INFO] [stderr]     29:     0x55993966278e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "1993fadccd02f12c284b55228fece254f86a54f5ab3a64820f987840e37bbe1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1993fadccd02f12c284b55228fece254f86a54f5ab3a64820f987840e37bbe1f", kill_on_drop: false }`
[INFO] [stdout] 1993fadccd02f12c284b55228fece254f86a54f5ab3a64820f987840e37bbe1f