[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#8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBengreen%2Frusty-snakeskin" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-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-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Bengreen/rusty-snakeskin on toolchain 8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd" "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" "+8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 88 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: v0.27.2)
[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" "+8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded pyo3-macros v0.15.2
[INFO] [stderr]   Downloaded pyo3-build-config v0.15.2
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded inventory-impl v0.1.11
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded pyo3-macros v0.14.5
[INFO] [stderr]   Downloaded pyo3-build-config v0.14.5
[INFO] [stderr]   Downloaded inventory v0.1.11
[INFO] [stderr]   Downloaded ghost v0.1.20
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.14.5
[INFO] [stderr]   Downloaded pyo3-asyncio v0.14.1
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.15.2
[INFO] [stderr]   Downloaded pyo3-asyncio-macros v0.14.1
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded pyo3 v0.15.2
[INFO] [stderr]   Downloaded pyo3 v0.14.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 296e4effa1c4126cbc102b65725fb70bbd4b2d8a0678c756f18c8987ce2814c5
[INFO] running `Command { std: "docker" "start" "-a" "296e4effa1c4126cbc102b65725fb70bbd4b2d8a0678c756f18c8987ce2814c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "296e4effa1c4126cbc102b65725fb70bbd4b2d8a0678c756f18c8987ce2814c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "296e4effa1c4126cbc102b65725fb70bbd4b2d8a0678c756f18c8987ce2814c5", kill_on_drop: false }`
[INFO] [stdout] 296e4effa1c4126cbc102b65725fb70bbd4b2d8a0678c756f18c8987ce2814c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa4c75bf172aff0eb86deb0dc4b6bc56e6e69cfe8116d4fc40cf9385cb370422
[INFO] running `Command { std: "docker" "start" "-a" "fa4c75bf172aff0eb86deb0dc4b6bc56e6e69cfe8116d4fc40cf9385cb370422", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling pyo3-build-config v0.15.2
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling pyo3-build-config v0.14.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking humantime v2.3.0
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]    Compiling rusty-snakeskin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking paste v0.1.18
[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' (316) 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:     0x557696641cd2 - std[537962ca55f41443]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x557696641cd2 - std[537962ca55f41443]::backtrace_rs::backtrace::trace_unsynchronized::<std[537962ca55f41443]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x557696641cd2 - std[537962ca55f41443]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x557696641cd2 - <<std[537962ca55f41443]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6c9c9c2c6e9466e2]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x55769665370a - <core[6c9c9c2c6e9466e2]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x55769665370a - core[6c9c9c2c6e9466e2]::fmt::write
[INFO] [stderr]      6:     0x557696646526 - std[537962ca55f41443]::io::default_write_fmt::<std[537962ca55f41443]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x557696646526 - <std[537962ca55f41443]::sys::stdio::unix::Stderr as std[537962ca55f41443]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x557696626dbf - <std[537962ca55f41443]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x557696626dbf - std[537962ca55f41443]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x55769663d8e1 - std[537962ca55f41443]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x55769663da9b - std[537962ca55f41443]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x557696626e78 - std[537962ca55f41443]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x55769661e9a9 - std[537962ca55f41443]::sys::backtrace::__rust_end_short_backtrace::<std[537962ca55f41443]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x55769662771d - __rustc[cc0363f037a135f8]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x557696653d7c - core[6c9c9c2c6e9466e2]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x557696653b52 - core[6c9c9c2c6e9466e2]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x55769660d632 - <core[6c9c9c2c6e9466e2]::result::Result<std[537962ca55f41443]::process::Output, std[537962ca55f41443]::io::error::Error>>::expect
[INFO] [stderr]     18:     0x55769660d356 - build_script_build[2765b3a0ce5af18c]::main
[INFO] [stderr]     19:     0x55769660f9f3 - <fn() as core[6c9c9c2c6e9466e2]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x55769660ce06 - std[537962ca55f41443]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     21:     0x55769660d219 - std[537962ca55f41443]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     22:     0x55769663cb36 - <&dyn core[6c9c9c2c6e9466e2]::ops::function::Fn<(), Output = i32> + core[6c9c9c2c6e9466e2]::marker::Sync + core[6c9c9c2c6e9466e2]::panic::unwind_safe::RefUnwindSafe as core[6c9c9c2c6e9466e2]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x55769663cb36 - std[537962ca55f41443]::panicking::catch_unwind::do_call::<&dyn core[6c9c9c2c6e9466e2]::ops::function::Fn<(), Output = i32> + core[6c9c9c2c6e9466e2]::marker::Sync + core[6c9c9c2c6e9466e2]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:581:40
[INFO] [stderr]     24:     0x55769663cb36 - std[537962ca55f41443]::panicking::catch_unwind::<i32, &dyn core[6c9c9c2c6e9466e2]::ops::function::Fn<(), Output = i32> + core[6c9c9c2c6e9466e2]::marker::Sync + core[6c9c9c2c6e9466e2]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:544:19
[INFO] [stderr]     25:     0x55769663cb36 - std[537962ca55f41443]::panic::catch_unwind::<&dyn core[6c9c9c2c6e9466e2]::ops::function::Fn<(), Output = i32> + core[6c9c9c2c6e9466e2]::marker::Sync + core[6c9c9c2c6e9466e2]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x55769663cb36 - std[537962ca55f41443]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x55769663cb36 - std[537962ca55f41443]::panicking::catch_unwind::do_call::<std[537962ca55f41443]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:581:40
[INFO] [stderr]     28:     0x55769663cb36 - std[537962ca55f41443]::panicking::catch_unwind::<isize, std[537962ca55f41443]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panicking.rs:544:19
[INFO] [stderr]     29:     0x55769663cb36 - std[537962ca55f41443]::panic::catch_unwind::<std[537962ca55f41443]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x55769663cb36 - std[537962ca55f41443]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/8c52f735abd1af9a73941b78fe7ed2ab08b9c0dd/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x55769660c611 - std[537962ca55f41443]::rt::lang_start::<()>
[INFO] [stderr]     32:     0x55769660fd25 - main
[INFO] [stderr]     33:     0x78d222fbd1ca - <unknown>
[INFO] [stderr]     34:     0x78d222fbd28b - __libc_start_main
[INFO] [stderr]     35:     0x55769660bda5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fa4c75bf172aff0eb86deb0dc4b6bc56e6e69cfe8116d4fc40cf9385cb370422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa4c75bf172aff0eb86deb0dc4b6bc56e6e69cfe8116d4fc40cf9385cb370422", kill_on_drop: false }`
[INFO] [stdout] fa4c75bf172aff0eb86deb0dc4b6bc56e6e69cfe8116d4fc40cf9385cb370422
