[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 try#f3d95de532264a1215023baa665c0028aecf74b1 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-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Bengreen/rusty-snakeskin on toolchain f3d95de532264a1215023baa665c0028aecf74b1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "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" "+f3d95de532264a1215023baa665c0028aecf74b1" "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" "+f3d95de532264a1215023baa665c0028aecf74b1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bb402e234a6f7b0b85da3143efdfcf5cf8c4e27fb4e13117966f4409cb60ecc
[INFO] running `Command { std: "docker" "start" "-a" "8bb402e234a6f7b0b85da3143efdfcf5cf8c4e27fb4e13117966f4409cb60ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bb402e234a6f7b0b85da3143efdfcf5cf8c4e27fb4e13117966f4409cb60ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bb402e234a6f7b0b85da3143efdfcf5cf8c4e27fb4e13117966f4409cb60ecc", kill_on_drop: false }`
[INFO] [stdout] 8bb402e234a6f7b0b85da3143efdfcf5cf8c4e27fb4e13117966f4409cb60ecc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9397b225f872ca10424a13d0fa74130ac2eb8f225b33e60a7566bcd5dfa678b8
[INFO] running `Command { std: "docker" "start" "-a" "9397b225f872ca10424a13d0fa74130ac2eb8f225b33e60a7566bcd5dfa678b8", 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]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]    Compiling rusty-snakeskin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]     Checking humantime v2.3.0
[INFO] [stderr]     Checking parking_lot v0.12.5
[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' (186) 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:     0x568f51cbf3e2 - std::backtrace_rs::backtrace::libunwind::trace::h7111bbf6d4d673e4
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x568f51cbf3e2 - std::backtrace_rs::backtrace::trace_unsynchronized::hc9dc51998274b187
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x568f51cbf3e2 - std::sys::backtrace::_print_fmt::h637e93c9ebef3a80
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x568f51cbf3e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h6bbf610d6ab28b32
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x568f51cce21f - core::fmt::rt::Argument::fmt::h26c7b8b2ffef56bc
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x568f51cce21f - core::fmt::write::h667869de048139c3
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x568f51c95f43 - std::io::default_write_fmt::h16afded5d92810d6
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x568f51c95f43 - std::io::Write::write_fmt::hbd203ca06609c6a2
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x568f51c9f1f2 - std::sys::backtrace::BacktraceLock::print::h75562ed19a4fba4f
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x568f51ca0e3c - std::panicking::default_hook::{{closure}}::h199efc4251699b0b
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x568f51ca0c96 - std::panicking::default_hook::h309dad23e034ef89
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x568f51ca1415 - std::panicking::panic_with_hook::h4eb76d74a2e0b8d8
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x568f51ca12aa - std::panicking::panic_handler::{{closure}}::hed36407b059fbfe9
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x568f51c9f329 - std::sys::backtrace::__rust_end_short_backtrace::h7dcb06a469981aa8
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x568f51c8a81d - __rustc[df1687459635782c]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x568f51cd1700 - core::panicking::panic_fmt::hd3b85015be399d33
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x568f51cd0f86 - core::result::unwrap_failed::h0d19366bf4530d7b
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/core/src/result.rs:1862:5
[INFO] [stderr]     17:     0x568f51c88592 - core::result::Result<T,E>::expect::h677c89c99b165ac1
[INFO] [stderr]     18:     0x568f51c86500 - build_script_build::main::h534d76623b2b766d
[INFO] [stderr]     19:     0x568f51c87543 - core::ops::function::FnOnce::call_once::ha96997ed42eb6fe0
[INFO] [stderr]     20:     0x568f51c87276 - std::sys::backtrace::__rust_begin_short_backtrace::ha56e79cae6f1017d
[INFO] [stderr]     21:     0x568f51c871a9 - std::rt::lang_start::{{closure}}::hfd7dfd230ac087bb
[INFO] [stderr]     22:     0x568f51c975d0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hcd6cdef14138a430
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x568f51c975d0 - std::panicking::catch_unwind::do_call::h9d5f1b75acb2131f
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:590:40
[INFO] [stderr]     24:     0x568f51c975d0 - std::panicking::catch_unwind::h533f93f8c24cd24f
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:553:19
[INFO] [stderr]     25:     0x568f51c975d0 - std::panic::catch_unwind::hd025dcd193cf8e28
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x568f51c975d0 - std::rt::lang_start_internal::{{closure}}::h46bb298bb506a414
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x568f51c975d0 - std::panicking::catch_unwind::do_call::hcb1f0c9d36f9cc81
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:590:40
[INFO] [stderr]     28:     0x568f51c975d0 - std::panicking::catch_unwind::h332c9730f0acbcf5
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panicking.rs:553:19
[INFO] [stderr]     29:     0x568f51c975d0 - std::panic::catch_unwind::h5ebc9c614243cdfe
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x568f51c975d0 - std::rt::lang_start_internal::h8364af735d7fd309
[INFO] [stderr]                                  at /rustc/f3d95de532264a1215023baa665c0028aecf74b1/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x568f51c87191 - std::rt::lang_start::h4bba3c6dea2bdcdb
[INFO] [stderr]     32:     0x568f51c8a535 - main
[INFO] [stderr]     33:     0x7198fc7441ca - <unknown>
[INFO] [stderr]     34:     0x7198fc74428b - __libc_start_main
[INFO] [stderr]     35:     0x568f51c862d5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9397b225f872ca10424a13d0fa74130ac2eb8f225b33e60a7566bcd5dfa678b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9397b225f872ca10424a13d0fa74130ac2eb8f225b33e60a7566bcd5dfa678b8", kill_on_drop: false }`
[INFO] [stdout] 9397b225f872ca10424a13d0fa74130ac2eb8f225b33e60a7566bcd5dfa678b8
