[INFO] cloning repository https://github.com/grahamc/nixswiftrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grahamc/nixswiftrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrahamc%2Fnixswiftrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrahamc%2Fnixswiftrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 117b1ca532c81bcf3b89ef2304a12a3dc2f2125a
[INFO] checking grahamc/nixswiftrust against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrahamc%2Fnixswiftrust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/grahamc/nixswiftrust
[INFO] finished tweaking git repo https://github.com/grahamc/nixswiftrust
[INFO] tweaked toml for git repo https://github.com/grahamc/nixswiftrust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/grahamc/nixswiftrust on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/grahamc/nixswiftrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking grahamc/nixswiftrust against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrahamc%2Fnixswiftrust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/grahamc/nixswiftrust
[INFO] finished tweaking git repo https://github.com/grahamc/nixswiftrust
[INFO] tweaked toml for git repo https://github.com/grahamc/nixswiftrust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/grahamc/nixswiftrust on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/grahamc/nixswiftrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65eb314b8a93dfa5f34a629fcf6c7bd8f92f29294ccaa45e7d31a0933786df6f
[INFO] running `Command { std: "docker" "start" "-a" "65eb314b8a93dfa5f34a629fcf6c7bd8f92f29294ccaa45e7d31a0933786df6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65eb314b8a93dfa5f34a629fcf6c7bd8f92f29294ccaa45e7d31a0933786df6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65eb314b8a93dfa5f34a629fcf6c7bd8f92f29294ccaa45e7d31a0933786df6f", kill_on_drop: false }`
[INFO] [stdout] 65eb314b8a93dfa5f34a629fcf6c7bd8f92f29294ccaa45e7d31a0933786df6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85e4a2c8c3b074d229b4d5a1c6e8d53d215b5b4e0fcefea94cf59be69e5c671d
[INFO] running `Command { std: "docker" "start" "-a" "85e4a2c8c3b074d229b4d5a1c6e8d53d215b5b4e0fcefea94cf59be69e5c671d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling base64 v0.21.7
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.76
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling swift-rs v1.0.7
[INFO] [stderr]    Compiling nixrustswift v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `nixrustswift 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/nixrustswift-6b1851db8340bda7/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (340) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/swift-rs-1.0.7/src-rs/build.rs:57:18:
[INFO] [stderr]   unexpected target operating system
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x555f3083804a - std[d3917c719803215a]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x555f3083804a - std[d3917c719803215a]::backtrace_rs::backtrace::trace_unsynchronized::<std[d3917c719803215a]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x555f3083804a - std[d3917c719803215a]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x555f3083804a - <<std[d3917c719803215a]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[e0b916ca2686fb30]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x555f3084abaa - <core[e0b916ca2686fb30]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x555f3084abaa - core[e0b916ca2686fb30]::fmt::write
[INFO] [stderr]      6:     0x555f3083c112 - std[d3917c719803215a]::io::default_write_fmt::<std[d3917c719803215a]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/io/mod.rs:621:11
[INFO] [stderr]      7:     0x555f3083c112 - <std[d3917c719803215a]::sys::stdio::unix::Stderr as std[d3917c719803215a]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/io/mod.rs:1976:13
[INFO] [stderr]      8:     0x555f3081d86f - <std[d3917c719803215a]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x555f3081d86f - std[d3917c719803215a]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x555f30833d01 - std[d3917c719803215a]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x555f30833ebb - std[d3917c719803215a]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x555f3081d95a - std[d3917c719803215a]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:691:13
[INFO] [stderr]     13:     0x555f30815429 - std[d3917c719803215a]::sys::backtrace::__rust_end_short_backtrace::<std[d3917c719803215a]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x555f3081e18d - __rustc[d6f45fead3d5d4ce]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x555f3084b33c - core[e0b916ca2686fb30]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x555f307d7bb7 - <swift_rs[c9d590b02f97df72]::build::RustTargetOS>::from_env
[INFO] [stderr]     17:     0x555f307d57a8 - <swift_rs[c9d590b02f97df72]::build::RustTarget>::from_env
[INFO] [stderr]     18:     0x555f307d4a3a - <swift_rs[c9d590b02f97df72]::build::SwiftEnv>::new
[INFO] [stderr]     19:     0x555f307d5a27 - <swift_rs[c9d590b02f97df72]::build::SwiftLinker>::link
[INFO] [stderr]     20:     0x555f307d01a1 - build_script_build[9355a07c1384a527]::main
[INFO] [stderr]     21:     0x555f307d0583 - <fn() as core[e0b916ca2686fb30]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     22:     0x555f307cfe06 - std[d3917c719803215a]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     23:     0x555f307d00f9 - std[d3917c719803215a]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     24:     0x555f30832f44 - <&dyn core[e0b916ca2686fb30]::ops::function::Fn<(), Output = i32> + core[e0b916ca2686fb30]::panic::unwind_safe::RefUnwindSafe + core[e0b916ca2686fb30]::marker::Sync as core[e0b916ca2686fb30]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     25:     0x555f30832f44 - std[d3917c719803215a]::panicking::catch_unwind::do_call::<&dyn core[e0b916ca2686fb30]::ops::function::Fn<(), Output = i32> + core[e0b916ca2686fb30]::panic::unwind_safe::RefUnwindSafe + core[e0b916ca2686fb30]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:581:40
[INFO] [stderr]     26:     0x555f30832f44 - std[d3917c719803215a]::panicking::catch_unwind::<i32, &dyn core[e0b916ca2686fb30]::ops::function::Fn<(), Output = i32> + core[e0b916ca2686fb30]::panic::unwind_safe::RefUnwindSafe + core[e0b916ca2686fb30]::marker::Sync>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:544:19
[INFO] [stderr]     27:     0x555f30832f44 - std[d3917c719803215a]::panic::catch_unwind::<&dyn core[e0b916ca2686fb30]::ops::function::Fn<(), Output = i32> + core[e0b916ca2686fb30]::panic::unwind_safe::RefUnwindSafe + core[e0b916ca2686fb30]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panic.rs:359:14
[INFO] [stderr]     28:     0x555f30832f44 - std[d3917c719803215a]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/rt.rs:175:24
[INFO] [stderr]     29:     0x555f30832f44 - std[d3917c719803215a]::panicking::catch_unwind::do_call::<std[d3917c719803215a]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:581:40
[INFO] [stderr]     30:     0x555f30832f44 - std[d3917c719803215a]::panicking::catch_unwind::<isize, std[d3917c719803215a]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panicking.rs:544:19
[INFO] [stderr]     31:     0x555f30832f44 - std[d3917c719803215a]::panic::catch_unwind::<std[d3917c719803215a]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/panic.rs:359:14
[INFO] [stderr]     32:     0x555f30832f44 - std[d3917c719803215a]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/b98202ad067d72e45cec8be3d5c15d86ef0fd086/library/std/src/rt.rs:171:5
[INFO] [stderr]     33:     0x555f307cfd91 - std[d3917c719803215a]::rt::lang_start::<()>
[INFO] [stderr]     34:     0x555f307d05e5 - main
[INFO] [stderr]     35:     0x76f06a71f1ca - <unknown>
[INFO] [stderr]     36:     0x76f06a71f28b - __libc_start_main
[INFO] [stderr]     37:     0x555f307cf9b5 - _start
[INFO] [stderr]     38:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "85e4a2c8c3b074d229b4d5a1c6e8d53d215b5b4e0fcefea94cf59be69e5c671d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85e4a2c8c3b074d229b4d5a1c6e8d53d215b5b4e0fcefea94cf59be69e5c671d", kill_on_drop: false }`
[INFO] [stdout] 85e4a2c8c3b074d229b4d5a1c6e8d53d215b5b4e0fcefea94cf59be69e5c671d