[INFO] cloning repository https://github.com/19h/ul2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/19h/ul2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F19h%2Ful2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F19h%2Ful2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dabd0ddb1d5a727d01ae78bca62c74b9dafe84c0
[INFO] checking 19h/ul2 against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F19h%2Ful2" "/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/19h/ul2
[INFO] finished tweaking git repo https://github.com/19h/ul2
[INFO] tweaked toml for git repo https://github.com/19h/ul2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/19h/ul2 on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/19h/ul2 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" "+f70ee28831acc074c109afab32d287057c3eca46" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: examples
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf080f6ce8a264223dbc9f0e026277c78421da28566d97de46df3f051f49f3ed
[INFO] running `Command { std: "docker" "start" "-a" "bf080f6ce8a264223dbc9f0e026277c78421da28566d97de46df3f051f49f3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf080f6ce8a264223dbc9f0e026277c78421da28566d97de46df3f051f49f3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf080f6ce8a264223dbc9f0e026277c78421da28566d97de46df3f051f49f3ed", kill_on_drop: false }`
[INFO] [stdout] bf080f6ce8a264223dbc9f0e026277c78421da28566d97de46df3f051f49f3ed
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 960764c9758e1963d4177c7049cc262d22522d5ee332bb7019c2af62da8d2fb4
[INFO] running `Command { std: "docker" "start" "-a" "960764c9758e1963d4177c7049cc262d22522d5ee332bb7019c2af62da8d2fb4", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: examples
[INFO] [stderr]    Compiling ul v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `ul 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/ul-d3a179f857450b5c/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (53) panicked at build.rs:159:5:
[INFO] [stderr]   Could not find Ultralight libraries. Please set UL_DIR environment variable to the directory containing the Ultralight libraries.
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x64eaa4af07a2 - std[8a7011b5972ea393]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x64eaa4af07a2 - std[8a7011b5972ea393]::backtrace_rs::backtrace::trace_unsynchronized::<std[8a7011b5972ea393]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x64eaa4af07a2 - std[8a7011b5972ea393]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x64eaa4af07a2 - <<std[8a7011b5972ea393]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[b8facb68d32e370]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x64eaa4b01967 - <core[b8facb68d32e370]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x64eaa4b01967 - core[b8facb68d32e370]::fmt::write
[INFO] [stderr]      6:     0x64eaa4af48f6 - std[8a7011b5972ea393]::io::default_write_fmt::<std[8a7011b5972ea393]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x64eaa4af48f6 - <std[8a7011b5972ea393]::sys::stdio::unix::Stderr as std[8a7011b5972ea393]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x64eaa4adb5ec - <std[8a7011b5972ea393]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x64eaa4adb5ec - std[8a7011b5972ea393]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:293:27
[INFO] [stderr]     10:     0x64eaa4aecab1 - std[8a7011b5972ea393]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:320:9
[INFO] [stderr]     11:     0x64eaa4aecc6b - std[8a7011b5972ea393]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:826:13
[INFO] [stderr]     12:     0x64eaa4adb6da - std[8a7011b5972ea393]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:692:13
[INFO] [stderr]     13:     0x64eaa4ad0b39 - std[8a7011b5972ea393]::sys::backtrace::__rust_end_short_backtrace::<std[8a7011b5972ea393]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x64eaa4adc00d - __rustc[9de75a00f0b995ca]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:690:5
[INFO] [stderr]     15:     0x64eaa4b01fac - core[b8facb68d32e370]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x64eaa4ac382d - build_script_build[f252a2cc8ee517fa]::find_ultralight_lib_dir
[INFO] [stderr]     17:     0x64eaa4ac3ccc - build_script_build[f252a2cc8ee517fa]::main
[INFO] [stderr]     18:     0x64eaa4ac5323 - <fn() as core[b8facb68d32e370]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x64eaa4ac1de6 - std[8a7011b5972ea393]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x64eaa4ac2019 - std[8a7011b5972ea393]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x64eaa4aec03a - <&dyn core[b8facb68d32e370]::ops::function::Fn<(), Output = i32> + core[b8facb68d32e370]::panic::unwind_safe::RefUnwindSafe + core[b8facb68d32e370]::marker::Sync as core[b8facb68d32e370]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x64eaa4aec03a - std[8a7011b5972ea393]::panicking::catch_unwind::do_call::<&dyn core[b8facb68d32e370]::ops::function::Fn<(), Output = i32> + core[b8facb68d32e370]::panic::unwind_safe::RefUnwindSafe + core[b8facb68d32e370]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:582:40
[INFO] [stderr]     23:     0x64eaa4aec03a - std[8a7011b5972ea393]::panicking::catch_unwind::<i32, &dyn core[b8facb68d32e370]::ops::function::Fn<(), Output = i32> + core[b8facb68d32e370]::panic::unwind_safe::RefUnwindSafe + core[b8facb68d32e370]::marker::Sync>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:545:19
[INFO] [stderr]     24:     0x64eaa4aec03a - std[8a7011b5972ea393]::panic::catch_unwind::<&dyn core[b8facb68d32e370]::ops::function::Fn<(), Output = i32> + core[b8facb68d32e370]::panic::unwind_safe::RefUnwindSafe + core[b8facb68d32e370]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x64eaa4aec03a - std[8a7011b5972ea393]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x64eaa4aec03a - std[8a7011b5972ea393]::panicking::catch_unwind::do_call::<std[8a7011b5972ea393]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:582:40
[INFO] [stderr]     27:     0x64eaa4aec03a - std[8a7011b5972ea393]::panicking::catch_unwind::<isize, std[8a7011b5972ea393]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panicking.rs:545:19
[INFO] [stderr]     28:     0x64eaa4aec03a - std[8a7011b5972ea393]::panic::catch_unwind::<std[8a7011b5972ea393]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x64eaa4aec03a - std[8a7011b5972ea393]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/f70ee28831acc074c109afab32d287057c3eca46/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x64eaa4ac1d61 - std[8a7011b5972ea393]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x64eaa4ac53b5 - main
[INFO] [stderr]     32:     0x702b1e2441ca - <unknown>
[INFO] [stderr]     33:     0x702b1e24428b - __libc_start_main
[INFO] [stderr]     34:     0x64eaa4ac1485 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "960764c9758e1963d4177c7049cc262d22522d5ee332bb7019c2af62da8d2fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "960764c9758e1963d4177c7049cc262d22522d5ee332bb7019c2af62da8d2fb4", kill_on_drop: false }`
[INFO] [stdout] 960764c9758e1963d4177c7049cc262d22522d5ee332bb7019c2af62da8d2fb4
