[INFO] fetching crate bincode-no-std 1.0.0...
[INFO] checking bincode-no-std-1.0.0 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate bincode-no-std 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate bincode-no-std 1.0.0 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bincode-no-std 1.0.0
[INFO] finished tweaking crates.io crate bincode-no-std 1.0.0
[INFO] tweaked toml for crates.io crate bincode-no-std 1.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding rustc_version v0.1.7 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.1.20 (latest: v1.0.23)
[INFO] [stderr]       Adding serde_bytes v0.10.5 (latest: v0.11.14)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded serde_bytes v0.10.5
[INFO] [stderr]   Downloaded core_io v0.1.20210325
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18cc218489274a73afb334e87bc6c931d90a85825fc1e2f9b47dc9b4c85a400f
[INFO] running `Command { std: "docker" "start" "-a" "18cc218489274a73afb334e87bc6c931d90a85825fc1e2f9b47dc9b4c85a400f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18cc218489274a73afb334e87bc6c931d90a85825fc1e2f9b47dc9b4c85a400f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18cc218489274a73afb334e87bc6c931d90a85825fc1e2f9b47dc9b4c85a400f", kill_on_drop: false }`
[INFO] [stdout] 18cc218489274a73afb334e87bc6c931d90a85825fc1e2f9b47dc9b4c85a400f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dd23cee4c54dbb92b42c96a193a41fc22684d9700eb96ad7d93dacd213eeac2
[INFO] running `Command { std: "docker" "start" "-a" "4dd23cee4c54dbb92b42c96a193a41fc22684d9700eb96ad7d93dacd213eeac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling core_io v0.1.20210325
[INFO] [stderr] error: failed to run custom build command for `core_io v0.1.20210325`
[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/core_io-1d10162e6422002e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/core_io-0.1.20210325/build.rs:73:69:
[INFO] [stderr]   Unknown compiler version, upgrade core_io?
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55edf93f2945 - std::backtrace_rs::backtrace::libunwind::trace::h876d7c806a499a4c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x55edf93f2945 - std::backtrace_rs::backtrace::trace_unsynchronized::h93aa6ac20204363f
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55edf93f2945 - std::sys_common::backtrace::_print_fmt::haa4d06348037420c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55edf93f2945 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb19a1068483db389
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55edf941468b - core::fmt::rt::Argument::fmt::he1186800a1f8dba1
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/fmt/rt.rs:165:63
[INFO] [stderr]      5:     0x55edf941468b - core::fmt::write::h93b97d526ac83ab7
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/fmt/mod.rs:1169:21
[INFO] [stderr]      6:     0x55edf93f036f - std::io::Write::write_fmt::h5b8b8a434bcca5dd
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/io/mod.rs:1835:15
[INFO] [stderr]      7:     0x55edf93f271e - std::sys_common::backtrace::_print::h68eb04d9824256f0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55edf93f271e - std::sys_common::backtrace::print::h9c98f0d9c4306586
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55edf93f3a89 - std::panicking::default_hook::{{closure}}::hcf6830dc400daae4
[INFO] [stderr]     10:     0x55edf93f37cd - std::panicking::default_hook::h483615856e3a5cc0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:298:9
[INFO] [stderr]     11:     0x55edf93f3f43 - std::panicking::rust_panic_with_hook::h36ebc998f351e5fd
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:795:13
[INFO] [stderr]     12:     0x55edf93f3e24 - std::panicking::begin_panic_handler::{{closure}}::h686207a93492b797
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:664:13
[INFO] [stderr]     13:     0x55edf93f2e09 - std::sys_common::backtrace::__rust_end_short_backtrace::h2e37e6bf5aac538a
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55edf93f3b57 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:652:5
[INFO] [stderr]     15:     0x55edf9413823 - core::panicking::panic_fmt::heae5d8e5e3703b89
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x55edf94139bc - core::panicking::panic_display::h98b8c8030581323c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/panicking.rs:262:5
[INFO] [stderr]     17:     0x55edf94135cc - core::option::expect_failed::h75d16d6f0c14e1dc
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/option.rs:1994:5
[INFO] [stderr]     18:     0x55edf93c1c8a - core::option::Option<T>::expect::h4706998c68d8428d
[INFO] [stderr]     19:     0x55edf93c3b6f - build_script_build::main::h4ac4070ba0f682a4
[INFO] [stderr]     20:     0x55edf93c0993 - core::ops::function::FnOnce::call_once::hb3343c5b64456ae5
[INFO] [stderr]     21:     0x55edf93c00b6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0bcdc541f4dda746
[INFO] [stderr]     22:     0x55edf93c0419 - std::rt::lang_start::{{closure}}::h20dd7f8317e57610
[INFO] [stderr]     23:     0x55edf93ecf8d - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h75d0a4fe40296b94
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     24:     0x55edf93ecf8d - std::panicking::try::do_call::ha27ca65264b021a4
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:559:40
[INFO] [stderr]     25:     0x55edf93ecf8d - std::panicking::try::h901e100a17b3cd54
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:523:19
[INFO] [stderr]     26:     0x55edf93ecf8d - std::panic::catch_unwind::h13d256f1691dfb07
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panic.rs:149:14
[INFO] [stderr]     27:     0x55edf93ecf8d - std::rt::lang_start_internal::{{closure}}::hdf5a5a26190e1fd8
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/rt.rs:141:48
[INFO] [stderr]     28:     0x55edf93ecf8d - std::panicking::try::do_call::h3a8fb98242ec30e5
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:559:40
[INFO] [stderr]     29:     0x55edf93ecf8d - std::panicking::try::h881801cd3cb8ba77
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:523:19
[INFO] [stderr]     30:     0x55edf93ecf8d - std::panic::catch_unwind::he14d380083644433
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panic.rs:149:14
[INFO] [stderr]     31:     0x55edf93ecf8d - std::rt::lang_start_internal::hf560e7575b65e65f
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/rt.rs:141:20
[INFO] [stderr]     32:     0x55edf93c03f7 - std::rt::lang_start::h84a66fddfce893d6
[INFO] [stderr]     33:     0x55edf93c49e5 - main
[INFO] [stderr]     34:     0x7f26bc2c7d90 - <unknown>
[INFO] [stderr]     35:     0x7f26bc2c7e40 - __libc_start_main
[INFO] [stderr]     36:     0x55edf93bff15 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4dd23cee4c54dbb92b42c96a193a41fc22684d9700eb96ad7d93dacd213eeac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd23cee4c54dbb92b42c96a193a41fc22684d9700eb96ad7d93dacd213eeac2", kill_on_drop: false }`
[INFO] [stdout] 4dd23cee4c54dbb92b42c96a193a41fc22684d9700eb96ad7d93dacd213eeac2