[INFO] fetching crate iptables_exporter 0.1.0...
[INFO] testing iptables_exporter-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate iptables_exporter 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate iptables_exporter 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iptables_exporter 0.1.0
[INFO] finished tweaking crates.io crate iptables_exporter 0.1.0
[INFO] tweaked toml for crates.io crate iptables_exporter 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate iptables_exporter 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lock_api v0.4.3
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.17
[INFO] [stderr]   Downloaded protobuf v2.23.0
[INFO] [stderr]   Downloaded prometheus v0.12.0
[INFO] [stderr]   Downloaded prometheus-hyper v0.1.2
[INFO] [stderr]   Downloaded sharded-slab v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98f0bf851ac762b897c2cb4327a5d29aff8993bbbad11c9ff601eec7aa8ba109
[INFO] running `Command { std: "docker" "start" "-a" "98f0bf851ac762b897c2cb4327a5d29aff8993bbbad11c9ff601eec7aa8ba109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98f0bf851ac762b897c2cb4327a5d29aff8993bbbad11c9ff601eec7aa8ba109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98f0bf851ac762b897c2cb4327a5d29aff8993bbbad11c9ff601eec7aa8ba109", kill_on_drop: false }`
[INFO] [stdout] 98f0bf851ac762b897c2cb4327a5d29aff8993bbbad11c9ff601eec7aa8ba109
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03c3779d81a5764f069f7b9eeef2ac3d7c056a06c49a48465789300b3d25d17b
[INFO] running `Command { std: "docker" "start" "-a" "03c3779d81a5764f069f7b9eeef2ac3d7c056a06c49a48465789300b3d25d17b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling protobuf v2.23.0
[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]    Compiling httparse v1.4.0
[INFO] [stderr]    Compiling futures-task v0.3.14
[INFO] [stderr]    Compiling prometheus v0.12.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling os_str_bytes v2.4.0
[INFO] [stderr]    Compiling httpdate v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.3
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling futures-channel v0.3.14
[INFO] [stderr]    Compiling futures-util v0.3.14
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling http-body v0.4.1
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling tracing v0.1.25
[INFO] [stderr]    Compiling pin-project v1.0.7
[INFO] [stderr]    Compiling tracing-subscriber v0.2.17
[INFO] [stderr]    Compiling clap v3.0.0-beta.2
[INFO] [stderr]    Compiling iptables_exporter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `iptables_exporter v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/iptables_exporter-8631b1854a66a6c3/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'byte index 10 is out of bounds of ``', build.rs:13:48
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55d1bbf5ac70 - std::backtrace_rs::backtrace::libunwind::trace::ha0ad43e8a952bfe7
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55d1bbf5ac70 - std::backtrace_rs::backtrace::trace_unsynchronized::h6830419c0c4130dc
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55d1bbf5ac70 - std::sys_common::backtrace::_print_fmt::h8f3516631ffa1ef5
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55d1bbf5ac70 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he1640d5f0d93f618
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55d1bbf77dcc - core::fmt::write::h88012e1f01caeebf
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x55d1bbf58b25 - std::io::Write::write_fmt::h360fa85b30182555
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x55d1bbf5c8ab - std::sys_common::backtrace::_print::ha1f00492f406a015
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55d1bbf5c8ab - std::sys_common::backtrace::print::hd54561b13feb6af3
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55d1bbf5c8ab - std::panicking::default_hook::{{closure}}::h84fe124cd0864662
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55d1bbf5c381 - std::panicking::default_hook::h5a8e74a76ce290a7
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55d1bbf5cf74 - std::panicking::rust_panic_with_hook::h67c812a4fe9d4c91
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x55d1bbf5ca57 - std::panicking::begin_panic_handler::{{closure}}::h33f9c1b96af300d7
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x55d1bbf5b16c - std::sys_common::backtrace::__rust_end_short_backtrace::h51bae64be5921f0e
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55d1bbf5c9b9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x55d1bbf411d1 - core::panicking::panic_fmt::h12a3a3c256485fca
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55d1bbf416c3 - core::str::slice_error_fail::h560f80f82ec68de4
[INFO] [stderr]     16:     0x55d1bbf46f50 - core::str::traits::<impl core::slice::index::SliceIndex<str> for core::ops::range::RangeTo<usize>>::index::h36871a09f193c512
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/str/traits.rs:289:21
[INFO] [stderr]     17:     0x55d1bbf46958 - core::str::traits::<impl core::ops::index::Index<I> for str>::index::hcde1adeca82c9747
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/str/traits.rs:64:9
[INFO] [stderr]     18:     0x55d1bbf4352e - <alloc::string::String as core::ops::index::Index<core::ops::range::RangeTo<usize>>>::index::h07ef79904a5f18fd
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/alloc/src/string.rs:2214:10
[INFO] [stderr]     19:     0x55d1bbf44fdc - build_script_build::main::hce5b397e01d71a3d
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:13:48
[INFO] [stderr]     20:     0x55d1bbf443ab - core::ops::function::FnOnce::call_once::ha3f25ca6f54e2e63
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     21:     0x55d1bbf42f0e - std::sys_common::backtrace::__rust_begin_short_backtrace::hd3abf9e8cea5de15
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     22:     0x55d1bbf42fa1 - std::rt::lang_start::{{closure}}::ha9f45aca5f5861cb
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:63:18
[INFO] [stderr]     23:     0x55d1bbf5d47a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::ha9408abe89f69dc4
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     24:     0x55d1bbf5d47a - std::panicking::try::do_call::h5b0cc9e9102acb65
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
[INFO] [stderr]     25:     0x55d1bbf5d47a - std::panicking::try::hddc7f8229138b3ba
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
[INFO] [stderr]     26:     0x55d1bbf5d47a - std::panic::catch_unwind::hfa401ff8bab2986e
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
[INFO] [stderr]     27:     0x55d1bbf5d47a - std::rt::lang_start_internal::{{closure}}::h8163422320d11405
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:45:48
[INFO] [stderr]     28:     0x55d1bbf5d47a - std::panicking::try::do_call::hc742cc7bb4f0fb20
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
[INFO] [stderr]     29:     0x55d1bbf5d47a - std::panicking::try::ha37d8d2dd1acf7d3
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
[INFO] [stderr]     30:     0x55d1bbf5d47a - std::panic::catch_unwind::h8a5381d5ecf437bc
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
[INFO] [stderr]     31:     0x55d1bbf5d47a - std::rt::lang_start_internal::h7e2cee8c90d4a4d3
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:45:20
[INFO] [stderr]     32:     0x55d1bbf42f70 - std::rt::lang_start::h8f10255b7e4d560b
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:62:5
[INFO] [stderr]     33:     0x55d1bbf452bc - main
[INFO] [stderr]     34:     0x7f25e937c0b3 - __libc_start_main
[INFO] [stderr]     35:     0x55d1bbf4192e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "03c3779d81a5764f069f7b9eeef2ac3d7c056a06c49a48465789300b3d25d17b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c3779d81a5764f069f7b9eeef2ac3d7c056a06c49a48465789300b3d25d17b", kill_on_drop: false }`
[INFO] [stdout] 03c3779d81a5764f069f7b9eeef2ac3d7c056a06c49a48465789300b3d25d17b