[INFO] fetching crate n4m 0.4.0...
[INFO] testing n4m-0.4.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate n4m 0.4.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate n4m 0.4.0
[INFO] finished tweaking crates.io crate n4m 0.4.0
[INFO] tweaked toml for crates.io crate n4m 0.4.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate n4m 0.4.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate n4m 0.4.0 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7
[INFO] running `Command { std: "docker" "start" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.11
[INFO] [stderr]    Compiling cc v1.4.3
[INFO] [stderr]    Compiling n4m v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `n4m v0.4.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_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/release/build/n4m/bcbcf711a7763aeb/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=N4M_LIB_DIR
[INFO] [stderr]   cargo:rerun-if-env-changed=N4M_RUNTIME_RPATH
[INFO] [stderr]   cargo:rerun-if-env-changed=N4M_INCLUDE_DIR
[INFO] [stderr]   cargo:rerun-if-env-changed=N4M_GENERATED_INCLUDE_DIR
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (103) panicked at build.rs:65:9:
[INFO] [stderr]   N4M_LIB_DIR is required; point it at the directory containing the target libn4m shared library
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x6548a7e23571 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x6548a7e3750a - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x6548a7e2895c - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x6548a7e01886 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x6548a7e1d7d1 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x6548a7e1d98b - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x6548a7e01932 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x6548a7dfa3d9 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x6548a7e0220d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x6548a7e37c7c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x6548a7d7ea57 - build_script_build[f0a97f7a82d241c0]::required_dir::{closure#0}
[INFO] [stderr]     11:     0x6548a7d7b9f0 - <core[a373ad73a504971]::option::Option<std[617be2ca0a6fd877]::ffi::os_str::OsString>>::unwrap_or_else::<build_script_build[f0a97f7a82d241c0]::required_dir::{closure#0}>
[INFO] [stderr]     12:     0x6548a7d7f5bb - build_script_build[f0a97f7a82d241c0]::required_dir
[INFO] [stderr]     13:     0x6548a7d80f9f - build_script_build[f0a97f7a82d241c0]::main
[INFO] [stderr]     14:     0x6548a7d84913 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     15:     0x6548a7d7e24e - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     16:     0x6548a7d7e6c9 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     17:     0x6548a7e1cad8 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     18:     0x6548a7d7e161 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     19:     0x6548a7d84a55 - main
[INFO] [stderr]     20:     0x72d04f57d601 - <unknown>
[INFO] [stderr]     21:     0x72d04f57d718 - __libc_start_main
[INFO] [stderr]     22:     0x6548a7d7b675 - _start
[INFO] [stderr]     23:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7", kill_on_drop: false }`
[INFO] [stdout] 6555b15f1c04af870f460cdfb78722411a53315260619a33679c7d05acd435c7
