[INFO] cloning repository https://github.com/Bengreen/rusty-snakeskin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bengreen/rusty-snakeskin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBengreen%2Frusty-snakeskin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBengreen%2Frusty-snakeskin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ad2dde47405748a21d933284cb867bce516805f
[INFO] checking Bengreen/rusty-snakeskin against master#90b65889799733f21ebdf59d96411aa531c5900a for pr-148477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBengreen%2Frusty-snakeskin" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Bengreen/rusty-snakeskin
[INFO] finished tweaking git repo https://github.com/Bengreen/rusty-snakeskin
[INFO] tweaked toml for git repo https://github.com/Bengreen/rusty-snakeskin written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Bengreen/rusty-snakeskin on toolchain 90b65889799733f21ebdf59d96411aa531c5900a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 87 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.9.3 (available: v0.11.8)
[INFO] [stderr]       Adding indoc-impl v0.3.6 (available: v0.3.7)
[INFO] [stderr]       Adding pyo3 v0.14.5 (available: v0.27.1)
[INFO] [stderr]       Adding pyo3-asyncio v0.14.1 (available: v0.20.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3-macros v0.15.2
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded inventory-impl v0.1.11
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded pyo3-asyncio v0.14.1
[INFO] [stderr]   Downloaded ghost v0.1.20
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.15.2
[INFO] [stderr]   Downloaded pyo3 v0.15.2
[INFO] [stderr]   Downloaded inventory v0.1.11
[INFO] [stderr]   Downloaded pyo3-build-config v0.14.5
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.14.5
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded pyo3-macros v0.14.5
[INFO] [stderr]   Downloaded pyo3-asyncio-macros v0.14.1
[INFO] [stderr]   Downloaded pyo3 v0.14.5
[INFO] [stderr]   Downloaded pyo3-build-config v0.15.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41d50ce1dc73af42f956afe70b074c1b79eee8ef4bc6b667f8a14d41f7fbc551
[INFO] running `Command { std: "docker" "start" "-a" "41d50ce1dc73af42f956afe70b074c1b79eee8ef4bc6b667f8a14d41f7fbc551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41d50ce1dc73af42f956afe70b074c1b79eee8ef4bc6b667f8a14d41f7fbc551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41d50ce1dc73af42f956afe70b074c1b79eee8ef4bc6b667f8a14d41f7fbc551", kill_on_drop: false }`
[INFO] [stdout] 41d50ce1dc73af42f956afe70b074c1b79eee8ef4bc6b667f8a14d41f7fbc551
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f64cf6eb40bb3468cb187d2da7c7c965c14efb86f0aea05695911c0921d20be7
[INFO] running `Command { std: "docker" "start" "-a" "f64cf6eb40bb3468cb187d2da7c7c965c14efb86f0aea05695911c0921d20be7", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling pyo3-build-config v0.15.2
[INFO] [stderr]    Compiling pyo3-build-config v0.14.5
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]     Checking humantime v2.3.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling rusty-snakeskin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.109
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr] error: failed to run custom build command for `rusty-snakeskin 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/rusty-snakeskin-4cb75c0b21af0e87/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rustc-link-search=native=./clibrary
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (275) panicked at build.rs:13:10:
[INFO] [stderr]   failed to execute python command: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x64985546a3e2 - std::backtrace_rs::backtrace::libunwind::trace::h3dfece87d38e678e
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x64985546a3e2 - std::backtrace_rs::backtrace::trace_unsynchronized::h598b3d1a4cc142bd
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x64985546a3e2 - std::sys::backtrace::_print_fmt::h8a45e1e0a8207652
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x64985546a3e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h308c0d880f760a32
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x64985547921f - core::fmt::rt::Argument::fmt::h3481dbf5753231bc
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x64985547921f - core::fmt::write::haa945362a56e47a4
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x649855440e13 - std::io::default_write_fmt::h4f465fb81c168d76
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x649855440e13 - std::io::Write::write_fmt::h73e277fd36a2f897
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x64985544a1f2 - std::sys::backtrace::BacktraceLock::print::h23fdb9296ed52a08
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x64985544be3c - std::panicking::default_hook::{{closure}}::h874fba906a1eead0
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x64985544bc96 - std::panicking::default_hook::h4a2d336b415f97ea
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x64985544c415 - std::panicking::panic_with_hook::h1312efcfed45defb
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x64985544c2aa - std::panicking::panic_handler::{{closure}}::h5f7c2e03b7897253
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x64985544a329 - std::sys::backtrace::__rust_end_short_backtrace::h5999a8d4ddd56aac
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x64985543581d - __rustc[5252cc545ffd5943]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x64985547c700 - core::panicking::panic_fmt::h08c11d25cce8cb30
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x64985547bf86 - core::result::unwrap_failed::hb7f603ed6553376b
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/core/src/result.rs:1862:5
[INFO] [stderr]     17:     0x649855433592 - core::result::Result<T,E>::expect::hd0df81d972ab3f68
[INFO] [stderr]     18:     0x649855431500 - build_script_build::main::hf04fddebc3185d2c
[INFO] [stderr]     19:     0x649855432543 - core::ops::function::FnOnce::call_once::h3dadca1c4460a292
[INFO] [stderr]     20:     0x649855432276 - std::sys::backtrace::__rust_begin_short_backtrace::hd814293e24fadfc1
[INFO] [stderr]     21:     0x6498554321a9 - std::rt::lang_start::{{closure}}::h8877f380e9538aa9
[INFO] [stderr]     22:     0x6498554425d0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4f6436b78d6afdc7
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x6498554425d0 - std::panicking::catch_unwind::do_call::h11545474392ae041
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:590:40
[INFO] [stderr]     24:     0x6498554425d0 - std::panicking::catch_unwind::h73c184249c61faac
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:553:19
[INFO] [stderr]     25:     0x6498554425d0 - std::panic::catch_unwind::h87b5477170146628
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x6498554425d0 - std::rt::lang_start_internal::{{closure}}::h70bc8394d41bdbd5
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x6498554425d0 - std::panicking::catch_unwind::do_call::h1357cf1f57518799
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:590:40
[INFO] [stderr]     28:     0x6498554425d0 - std::panicking::catch_unwind::h51fa10671853189c
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panicking.rs:553:19
[INFO] [stderr]     29:     0x6498554425d0 - std::panic::catch_unwind::h3d96451d4b7c4f47
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x6498554425d0 - std::rt::lang_start_internal::hfb2d56f56ca71999
[INFO] [stderr]                                  at /rustc/90b65889799733f21ebdf59d96411aa531c5900a/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x649855432191 - std::rt::lang_start::hf61bb4b419ee981a
[INFO] [stderr]     32:     0x649855435535 - main
[INFO] [stderr]     33:     0x7a75254e91ca - <unknown>
[INFO] [stderr]     34:     0x7a75254e928b - __libc_start_main
[INFO] [stderr]     35:     0x6498554312d5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f64cf6eb40bb3468cb187d2da7c7c965c14efb86f0aea05695911c0921d20be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f64cf6eb40bb3468cb187d2da7c7c965c14efb86f0aea05695911c0921d20be7", kill_on_drop: false }`
[INFO] [stdout] f64cf6eb40bb3468cb187d2da7c7c965c14efb86f0aea05695911c0921d20be7
