[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#3f6250a7bb79e600d9036bbc7c8f65af43933643 for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBengreen%2Frusty-snakeskin" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-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-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Bengreen/rusty-snakeskin on toolchain 3f6250a7bb79e600d9036bbc7c8f65af43933643
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "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" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "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: v0.11.9)
[INFO] [stderr]       Adding indoc-impl v0.3.6 (available: v0.3.7)
[INFO] [stderr]       Adding pyo3 v0.14.5 (available: v0.28.2)
[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" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.15.2
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded pyo3-macros v0.15.2
[INFO] [stderr]   Downloaded inventory-impl v0.1.11
[INFO] [stderr]   Downloaded inventory v0.1.11
[INFO] [stderr]   Downloaded pyo3-macros v0.14.5
[INFO] [stderr]   Downloaded pyo3-asyncio-macros v0.14.1
[INFO] [stderr]   Downloaded pyo3-build-config v0.14.5
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.14.5
[INFO] [stderr]   Downloaded pyo3-asyncio v0.14.1
[INFO] [stderr]   Downloaded pyo3-build-config v0.15.2
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded pyo3 v0.15.2
[INFO] [stderr]   Downloaded ghost v0.1.20
[INFO] [stderr]   Downloaded pyo3 v0.14.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6d542273a2a78ac943c9884f19c3cea5a89d815487691b0118dbf2cab163f6a
[INFO] running `Command { std: "docker" "start" "-a" "f6d542273a2a78ac943c9884f19c3cea5a89d815487691b0118dbf2cab163f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6d542273a2a78ac943c9884f19c3cea5a89d815487691b0118dbf2cab163f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6d542273a2a78ac943c9884f19c3cea5a89d815487691b0118dbf2cab163f6a", kill_on_drop: false }`
[INFO] [stdout] f6d542273a2a78ac943c9884f19c3cea5a89d815487691b0118dbf2cab163f6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a07ae412eb05c12d03dd6ff746726ba6c851b3f619fa5fa97ecd93c2985edf7a
[INFO] running `Command { std: "docker" "start" "-a" "a07ae412eb05c12d03dd6ff746726ba6c851b3f619fa5fa97ecd93c2985edf7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling pyo3-build-config v0.15.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling pyo3-build-config v0.14.5
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]     Checking futures-sink v0.3.32
[INFO] [stderr]     Checking futures-core v0.3.32
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]     Checking futures-io v0.3.32
[INFO] [stderr]     Checking bytes v1.11.1
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]    Compiling rusty-snakeskin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking env_logger v0.9.3
[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' (199) 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:     0x57184faca36a - std[2616be7e16619f65]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x57184faca36a - std[2616be7e16619f65]::backtrace_rs::backtrace::trace_unsynchronized::<std[2616be7e16619f65]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x57184faca36a - std[2616be7e16619f65]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x57184faca36a - <<std[2616be7e16619f65]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a217921f891fa6d1]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x57184fadb44a - <core[a217921f891fa6d1]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x57184fadb44a - core[a217921f891fa6d1]::fmt::write
[INFO] [stderr]      6:     0x57184face672 - std[2616be7e16619f65]::io::default_write_fmt::<std[2616be7e16619f65]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x57184face672 - <std[2616be7e16619f65]::sys::stdio::unix::Stderr as std[2616be7e16619f65]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x57184faaff6f - <std[2616be7e16619f65]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x57184faaff6f - std[2616be7e16619f65]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x57184fac6021 - std[2616be7e16619f65]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x57184fac61db - std[2616be7e16619f65]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x57184fab0028 - std[2616be7e16619f65]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x57184faa5469 - std[2616be7e16619f65]::sys::backtrace::__rust_end_short_backtrace::<std[2616be7e16619f65]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x57184fab088d - __rustc[79bb0e7ed026b28d]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x57184fadbc5c - core[a217921f891fa6d1]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x57184fadba32 - core[a217921f891fa6d1]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x57184fa97032 - <core[a217921f891fa6d1]::result::Result<std[2616be7e16619f65]::process::Output, std[2616be7e16619f65]::io::error::Error>>::expect
[INFO] [stderr]     18:     0x57184fa96bc6 - build_script_build[1a8fbb716454e6ec]::main
[INFO] [stderr]     19:     0x57184fa99203 - <fn() as core[a217921f891fa6d1]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x57184fa96676 - std[2616be7e16619f65]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     21:     0x57184fa96a89 - std[2616be7e16619f65]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     22:     0x57184fac53a6 - <&dyn core[a217921f891fa6d1]::ops::function::Fn<(), Output = i32> + core[a217921f891fa6d1]::marker::Sync + core[a217921f891fa6d1]::panic::unwind_safe::RefUnwindSafe as core[a217921f891fa6d1]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x57184fac53a6 - std[2616be7e16619f65]::panicking::catch_unwind::do_call::<&dyn core[a217921f891fa6d1]::ops::function::Fn<(), Output = i32> + core[a217921f891fa6d1]::marker::Sync + core[a217921f891fa6d1]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:581:40
[INFO] [stderr]     24:     0x57184fac53a6 - std[2616be7e16619f65]::panicking::catch_unwind::<i32, &dyn core[a217921f891fa6d1]::ops::function::Fn<(), Output = i32> + core[a217921f891fa6d1]::marker::Sync + core[a217921f891fa6d1]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:544:19
[INFO] [stderr]     25:     0x57184fac53a6 - std[2616be7e16619f65]::panic::catch_unwind::<&dyn core[a217921f891fa6d1]::ops::function::Fn<(), Output = i32> + core[a217921f891fa6d1]::marker::Sync + core[a217921f891fa6d1]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x57184fac53a6 - std[2616be7e16619f65]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x57184fac53a6 - std[2616be7e16619f65]::panicking::catch_unwind::do_call::<std[2616be7e16619f65]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:581:40
[INFO] [stderr]     28:     0x57184fac53a6 - std[2616be7e16619f65]::panicking::catch_unwind::<isize, std[2616be7e16619f65]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panicking.rs:544:19
[INFO] [stderr]     29:     0x57184fac53a6 - std[2616be7e16619f65]::panic::catch_unwind::<std[2616be7e16619f65]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x57184fac53a6 - std[2616be7e16619f65]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/3f6250a7bb79e600d9036bbc7c8f65af43933643/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x57184fa95e81 - std[2616be7e16619f65]::rt::lang_start::<()>
[INFO] [stderr]     32:     0x57184fa99535 - main
[INFO] [stderr]     33:     0x77f06e94e1ca - <unknown>
[INFO] [stderr]     34:     0x77f06e94e28b - __libc_start_main
[INFO] [stderr]     35:     0x57184fa95615 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a07ae412eb05c12d03dd6ff746726ba6c851b3f619fa5fa97ecd93c2985edf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a07ae412eb05c12d03dd6ff746726ba6c851b3f619fa5fa97ecd93c2985edf7a", kill_on_drop: false }`
[INFO] [stdout] a07ae412eb05c12d03dd6ff746726ba6c851b3f619fa5fa97ecd93c2985edf7a
