[INFO] fetching crate klt-sys 0.1.0...
[INFO] checking klt-sys-0.1.0 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate klt-sys 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate klt-sys 0.1.0 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate klt-sys 0.1.0
[INFO] finished tweaking crates.io crate klt-sys 0.1.0
[INFO] tweaked toml for crates.io crate klt-sys 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82e4ffc5616c16f056d547b6fcac3dbbc0bba1a90549e7e2b9112fe976fecc00
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "82e4ffc5616c16f056d547b6fcac3dbbc0bba1a90549e7e2b9112fe976fecc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82e4ffc5616c16f056d547b6fcac3dbbc0bba1a90549e7e2b9112fe976fecc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82e4ffc5616c16f056d547b6fcac3dbbc0bba1a90549e7e2b9112fe976fecc00", kill_on_drop: false }`
[INFO] [stdout] 82e4ffc5616c16f056d547b6fcac3dbbc0bba1a90549e7e2b9112fe976fecc00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 694580a0df3b51feec838dc516ce79dcf1eed61330f1a33bdffc7ca20bcc6b5e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "694580a0df3b51feec838dc516ce79dcf1eed61330f1a33bdffc7ca20bcc6b5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling klt-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `klt-sys v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/klt-sys-27e54c0c38e0ee58/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build/build.rs
[INFO] [stderr]   cargo:rerun-if-changed=lib/klt
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'could not create klt build log: Read-only file system (os error 30)', build/build.rs:33:40
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55e5f496a410 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55e5f496a410 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55e5f496a410 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55e5f496a410 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd8c307a38b9bab04
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55e5f49852dc - core::fmt::write::h3868db8542c90941
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/core/src/fmt/mod.rs:1096:17
[INFO] [stderr]      5:     0x55e5f4968092 - std::io::Write::write_fmt::hab90295d5a0f197d
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/io/mod.rs:1568:15
[INFO] [stderr]      6:     0x55e5f496c145 - std::sys_common::backtrace::_print::h19224910b8700cf1
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55e5f496c145 - std::sys_common::backtrace::print::h25dedfa68c5fb84a
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55e5f496c145 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55e5f496bbf3 - std::panicking::default_hook::he65cee71c4209f0c
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55e5f496c8e1 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55e5f496c427 - std::panicking::begin_panic_handler::{{closure}}::h9b9fecf185178864
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55e5f496a8ac - std::sys_common::backtrace::__rust_end_short_backtrace::h57be46a42dc7f24b
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55e5f496c389 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55e5f496c33b - std::panicking::begin_panic_fmt::h12277576db89392f
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:435:5
[INFO] [stderr]     15:     0x55e5f494d4e5 - build_script_build::build_klt::{{closure}}::h3e13801f94652ef4
[INFO] [stderr]                                  at /opt/rustwide/workdir/build/build.rs:33:40
[INFO] [stderr]     16:     0x55e5f494c712 - core::result::Result<T,E>::unwrap_or_else::h26034265a5868d5b
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/core/src/result.rs:821:23
[INFO] [stderr]     17:     0x55e5f494d07a - build_script_build::build_klt::h38202401e94fab82
[INFO] [stderr]                                  at /opt/rustwide/workdir/build/build.rs:32:15
[INFO] [stderr]     18:     0x55e5f494d69c - build_script_build::main::he83a44609b88f399
[INFO] [stderr]                                  at /opt/rustwide/workdir/build/build.rs:52:5
[INFO] [stderr]     19:     0x55e5f494ac2b - core::ops::function::FnOnce::call_once::h809c135fb8fd13d6
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x55e5f494f09e - std::sys_common::backtrace::__rust_begin_short_backtrace::hde4f9824144ce5d9
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x55e5f494e591 - std::rt::lang_start::{{closure}}::h22dc1f8370d314bb
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/rt.rs:66:18
[INFO] [stderr]     22:     0x55e5f496cd07 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2c4fd7d4128112a8
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x55e5f496cd07 - std::panicking::try::do_call::h41fb7dbbbe7bece6
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:379:40
[INFO] [stderr]     24:     0x55e5f496cd07 - std::panicking::try::hd38008ccba72bce1
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panicking.rs:343:19
[INFO] [stderr]     25:     0x55e5f496cd07 - std::panic::catch_unwind::h057e765cd60f2d13
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/panic.rs:431:14
[INFO] [stderr]     26:     0x55e5f496cd07 - std::rt::lang_start_internal::hdb9d0b9d2cdcda8b
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/rt.rs:51:25
[INFO] [stderr]     27:     0x55e5f494e567 - std::rt::lang_start::h8d56ea65ee63bf5c
[INFO] [stderr]                                  at /rustc/15a786332e2f0dd343b226ab6bb8ec028a350f73/library/std/src/rt.rs:65:5
[INFO] [stderr]     28:     0x55e5f494d6ca - main
[INFO] [stderr]     29:     0x7fa70ba290b3 - __libc_start_main
[INFO] [stderr]     30:     0x55e5f494909e - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "694580a0df3b51feec838dc516ce79dcf1eed61330f1a33bdffc7ca20bcc6b5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "694580a0df3b51feec838dc516ce79dcf1eed61330f1a33bdffc7ca20bcc6b5e", kill_on_drop: false }`
[INFO] [stdout] 694580a0df3b51feec838dc516ce79dcf1eed61330f1a33bdffc7ca20bcc6b5e