[INFO] fetching crate bandsocks 0.2.1...
[INFO] checking bandsocks-0.2.1 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate bandsocks 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate bandsocks 0.2.1 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bandsocks 0.2.1
[INFO] finished tweaking crates.io crate bandsocks 0.2.1
[INFO] tweaked toml for crates.io crate bandsocks 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate bandsocks 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 643815e7a505b20d53a2d28ca5ca0faed194bd729b3a0d095143299bc1675cab
[INFO] running `Command { std: "docker" "start" "-a" "643815e7a505b20d53a2d28ca5ca0faed194bd729b3a0d095143299bc1675cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "643815e7a505b20d53a2d28ca5ca0faed194bd729b3a0d095143299bc1675cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "643815e7a505b20d53a2d28ca5ca0faed194bd729b3a0d095143299bc1675cab", kill_on_drop: false }`
[INFO] [stdout] 643815e7a505b20d53a2d28ca5ca0faed194bd729b3a0d095143299bc1675cab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92ef2685034b1602d1db86a0b8bbe0ea2c3b9c99761f9500a3a85d191d447c6d
[INFO] running `Command { std: "docker" "start" "-a" "92ef2685034b1602d1db86a0b8bbe0ea2c3b9c99761f9500a3a85d191d447c6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling bandsocks v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.36
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking socket2 v0.3.17
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking file_limit v0.0.2
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]    Compiling hash32-derive v0.1.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr] error: failed to run custom build command for `bandsocks v0.2.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/bandsocks-766f30da2da19693/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=sand/sand-Cargo.toml
[INFO] [stderr]   cargo:rerun-if-changed=sand/sand-Cargo.lock
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/abi.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/binformat/elf64.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/binformat/mod.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/binformat/script.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/init.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/ipc.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/lib.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/main.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/nolibc.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/parser.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/loader.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/maps.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/mod.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/stack.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/syscall.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/table.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/process/task.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/protocol.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/ptrace.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/remote/mem.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/remote/mod.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/remote/scratchpad.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/remote/trampoline.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/seccomp.rs
[INFO] [stderr]   cargo:rerun-if-changed=sand/src/tracer.rs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: toolchain 'nightly-x86_64-unknown-linux-gnu' is not installed
[INFO] [stderr]   thread 'main' panicked at 'assertion failed: result.unwrap().success()', build.rs:42:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55a7ed3b3a10 - std::backtrace_rs::backtrace::libunwind::trace::hec7eaac9435d3512
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55a7ed3b3a10 - std::backtrace_rs::backtrace::trace_unsynchronized::h42791b8fa12b7daa
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55a7ed3b3a10 - std::sys_common::backtrace::_print_fmt::h3da3ebe04fb665a8
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55a7ed3b3a10 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he40bcdde3c4491cd
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55a7ed3d2d2f - core::fmt::write::h2c729149c08098ab
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x55a7ed3b17d5 - std::io::Write::write_fmt::h28e0f2f58b8d7b7e
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/io/mod.rs:1580:15
[INFO] [stderr]      6:     0x55a7ed3b5a1b - std::sys_common::backtrace::_print::h7f0223b1e3d898fc
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55a7ed3b5a1b - std::sys_common::backtrace::print::h58edd634a14c2d4c
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55a7ed3b5a1b - std::panicking::default_hook::{{closure}}::h71657a7591430164
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55a7ed3b54fd - std::panicking::default_hook::hcdf4eb5db072c85b
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55a7ed3b5fcd - std::panicking::rust_panic_with_hook::hfb91e961ffb5b8e0
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55a7ed3b5b97 - std::panicking::begin_panic_handler::{{closure}}::h984d540e84311150
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x55a7ed3b3eac - std::sys_common::backtrace::__rust_end_short_backtrace::h32354258ff2aecd1
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55a7ed3b5b29 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55a7ed368161 - core::panicking::panic_fmt::he3827412471ccbb1
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55a7ed3680ad - core::panicking::panic::hc9da14adaf11eba7
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x55a7ed3758c2 - build_script_build::main::h56576794d46ce171
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:42:9
[INFO] [stderr]     17:     0x55a7ed36f9db - core::ops::function::FnOnce::call_once::h2e9b528207e6e475
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     18:     0x55a7ed3740ae - std::sys_common::backtrace::__rust_begin_short_backtrace::hd905e7a270e9f273
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     19:     0x55a7ed36e581 - std::rt::lang_start::{{closure}}::h8bbdb36c49c3d4b9
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/rt.rs:66:18
[INFO] [stderr]     20:     0x55a7ed3b63ca - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd5953dadf0bc8f54
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     21:     0x55a7ed3b63ca - std::panicking::try::do_call::h23b369f1996fb7d4
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:379:40
[INFO] [stderr]     22:     0x55a7ed3b63ca - std::panicking::try::he017ee9ed6bce192
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:343:19
[INFO] [stderr]     23:     0x55a7ed3b63ca - std::panic::catch_unwind::hbfb892340a78b30d
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panic.rs:431:14
[INFO] [stderr]     24:     0x55a7ed3b63ca - std::rt::lang_start_internal::hce6e4c0ce56abb51
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/rt.rs:51:25
[INFO] [stderr]     25:     0x55a7ed36e560 - std::rt::lang_start::h9329333600f30a54
[INFO] [stderr]                                  at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/rt.rs:65:5
[INFO] [stderr]     26:     0x55a7ed375b8c - main
[INFO] [stderr]     27:     0x7f8f8b9940b3 - __libc_start_main
[INFO] [stderr]     28:     0x55a7ed36885e - _start
[INFO] [stderr]     29:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "92ef2685034b1602d1db86a0b8bbe0ea2c3b9c99761f9500a3a85d191d447c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92ef2685034b1602d1db86a0b8bbe0ea2c3b9c99761f9500a3a85d191d447c6d", kill_on_drop: false }`
[INFO] [stdout] 92ef2685034b1602d1db86a0b8bbe0ea2c3b9c99761f9500a3a85d191d447c6d