[INFO] cloning repository https://github.com/sthorpe/MerkleMountainRange
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sthorpe/MerkleMountainRange" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsthorpe%2FMerkleMountainRange", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsthorpe%2FMerkleMountainRange'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97567c73a1de8d30710201261b1927b5c0e1ac0e
[INFO] checking sthorpe/MerkleMountainRange against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsthorpe%2FMerkleMountainRange" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sthorpe/MerkleMountainRange on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sthorpe/MerkleMountainRange
[INFO] finished tweaking git repo https://github.com/sthorpe/MerkleMountainRange
[INFO] tweaked toml for git repo https://github.com/sthorpe/MerkleMountainRange written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sthorpe/MerkleMountainRange 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking sthorpe/MerkleMountainRange against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsthorpe%2FMerkleMountainRange" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sthorpe/MerkleMountainRange on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sthorpe/MerkleMountainRange
[INFO] finished tweaking git repo https://github.com/sthorpe/MerkleMountainRange
[INFO] tweaked toml for git repo https://github.com/sthorpe/MerkleMountainRange written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sthorpe/MerkleMountainRange 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking sthorpe/MerkleMountainRange against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsthorpe%2FMerkleMountainRange" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sthorpe/MerkleMountainRange on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sthorpe/MerkleMountainRange
[INFO] finished tweaking git repo https://github.com/sthorpe/MerkleMountainRange
[INFO] tweaked toml for git repo https://github.com/sthorpe/MerkleMountainRange written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sthorpe/MerkleMountainRange 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded db-key v0.0.5
[INFO] [stderr]   Downloaded leveldb v0.8.4
[INFO] [stderr]   Downloaded leveldb-sys v2.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 010940e2261a32d2825711a7e192748c63a645eae70d1c966295365ec08c6088
[INFO] running `Command { std: "docker" "start" "-a" "010940e2261a32d2825711a7e192748c63a645eae70d1c966295365ec08c6088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "010940e2261a32d2825711a7e192748c63a645eae70d1c966295365ec08c6088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "010940e2261a32d2825711a7e192748c63a645eae70d1c966295365ec08c6088", kill_on_drop: false }`
[INFO] [stdout] 010940e2261a32d2825711a7e192748c63a645eae70d1c966295365ec08c6088
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfc7baaa49685b4752d2b224e4bd6be20709e34bea78f92de582a541ca625e09
[INFO] running `Command { std: "docker" "start" "-a" "dfc7baaa49685b4752d2b224e4bd6be20709e34bea78f92de582a541ca625e09", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling leveldb-sys v2.0.4
[INFO] [stderr]     Checking db-key v0.0.5
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr] error: failed to run custom build command for `leveldb-sys v2.0.4`
[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/leveldb-sys-834c2fd2c22ed127/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   [build] Started
[INFO] [stderr]   [snappy] Cleaning
[INFO] [stderr]   make: Entering directory '/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/leveldb-sys-2.0.4/deps/snappy-1.1.2'
[INFO] [stderr]   make: Leaving directory '/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/leveldb-sys-2.0.4/deps/snappy-1.1.2'
[INFO] [stderr]   [snappy] Configuring
[INFO] [stderr]   [snappy] Building
[INFO] [stderr]   make: Entering directory '/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/leveldb-sys-2.0.4/deps/snappy-1.1.2'
[INFO] [stderr]   make: Leaving directory '/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/leveldb-sys-2.0.4/deps/snappy-1.1.2'
[INFO] [stderr]   [build] Copying output files
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   make: *** No rule to make target 'distclean'.  Stop.
[INFO] [stderr]   ./configure: line 2175: config.log: Read-only file system
[INFO] [stderr]   ./configure: line 2185: config.log: Read-only file system
[INFO] [stderr]   make: *** No targets specified and no makefile found.  Stop.
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/leveldb-sys-2.0.4/src/build.rs:47:14:
[INFO] [stderr]   copy of output files failed
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55dee8af8ed6 - std::backtrace_rs::backtrace::libunwind::trace::h31bf9e16c3129d88
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x55dee8af8ed6 - std::backtrace_rs::backtrace::trace_unsynchronized::hfbf8ae71cff6d572
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55dee8af8ed6 - std::sys_common::backtrace::_print_fmt::h51a5c032426e5886
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55dee8af8ed6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc9ed9fb0e0178e64
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55dee8b1acdc - core::fmt::rt::Argument::fmt::h4294b4ebdfeb70b0
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x55dee8b1acdc - core::fmt::write::hecc5a1c31014825e
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x55dee8af6e7f - std::io::Write::write_fmt::hdd43e3748f3c18c1
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/io/mod.rs:1846:15
[INFO] [stderr]      7:     0x55dee8af8c84 - std::sys_common::backtrace::_print::h1ef3744a6b3284d7
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55dee8af8c84 - std::sys_common::backtrace::print::h87f11e711d7ec1f2
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55dee8afa2fb - std::panicking::default_hook::{{closure}}::hc671c6c8612bb33a
[INFO] [stderr]     10:     0x55dee8afa057 - std::panicking::default_hook::h7755299c777843b5
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x55dee8afa79d - std::panicking::rust_panic_with_hook::hf5c0a76956d1f55b
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x55dee8afa672 - std::panicking::begin_panic_handler::{{closure}}::h75ace17bd1a3cacd
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x55dee8af93b6 - std::sys_common::backtrace::__rust_end_short_backtrace::h0c85a736a9e46df5
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55dee8afa3a4 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x55dee8ac20f5 - core::panicking::panic_fmt::hca2ab16c2853391a
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x55dee8b1a2b1 - core::panicking::panic_display::h2c1628732d2324b4
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/panicking.rs:196:5
[INFO] [stderr]     17:     0x55dee8ac20bb - core::panicking::panic_str::h9fd050dae0893322
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/panicking.rs:171:5
[INFO] [stderr]     18:     0x55dee8ac20bb - core::option::expect_failed::h38482e568a6eccfd
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/option.rs:1995:5
[INFO] [stderr]     19:     0x55dee8ac5ccb - core::option::Option<T>::expect::h0c53c9f9ad050702
[INFO] [stderr]     20:     0x55dee8ad43db - build_script_build::build_snappy::h5d17d564e3ae1e50
[INFO] [stderr]     21:     0x55dee8ad59f0 - build_script_build::main::h14f1945a542b3365
[INFO] [stderr]     22:     0x55dee8ac2ca3 - core::ops::function::FnOnce::call_once::h78a7b948fb6b7a04
[INFO] [stderr]     23:     0x55dee8ac2ad6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h76bb5bd18e404844
[INFO] [stderr]     24:     0x55dee8acf149 - std::rt::lang_start::{{closure}}::hbc05211ed7739ac2
[INFO] [stderr]     25:     0x55dee8af3af3 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h7902246483b7d7c4
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     26:     0x55dee8af3af3 - std::panicking::try::do_call::h6d4f049e2f4b4d6b
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:552:40
[INFO] [stderr]     27:     0x55dee8af3af3 - std::panicking::try::h08871fd6170a32df
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:516:19
[INFO] [stderr]     28:     0x55dee8af3af3 - std::panic::catch_unwind::hb4f344f38c178ba4
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panic.rs:146:14
[INFO] [stderr]     29:     0x55dee8af3af3 - std::rt::lang_start_internal::{{closure}}::h0d066aabba5d6be4
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/rt.rs:148:48
[INFO] [stderr]     30:     0x55dee8af3af3 - std::panicking::try::do_call::h2b134820a693c229
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:552:40
[INFO] [stderr]     31:     0x55dee8af3af3 - std::panicking::try::h6f4c84a9341cfb96
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panicking.rs:516:19
[INFO] [stderr]     32:     0x55dee8af3af3 - std::panic::catch_unwind::h1e69ddfdb871ed54
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/panic.rs:146:14
[INFO] [stderr]     33:     0x55dee8af3af3 - std::rt::lang_start_internal::h55a0eab7bdccf49d
[INFO] [stderr]                                  at /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/rt.rs:148:20
[INFO] [stderr]     34:     0x55dee8acf127 - std::rt::lang_start::hb370aa60387255bd
[INFO] [stderr]     35:     0x55dee8ad6a55 - main
[INFO] [stderr]     36:     0x7f269b6bed90 - <unknown>
[INFO] [stderr]     37:     0x7f269b6bee40 - __libc_start_main
[INFO] [stderr]     38:     0x55dee8ac26d5 - _start
[INFO] [stderr]     39:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dfc7baaa49685b4752d2b224e4bd6be20709e34bea78f92de582a541ca625e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfc7baaa49685b4752d2b224e4bd6be20709e34bea78f92de582a541ca625e09", kill_on_drop: false }`
[INFO] [stdout] dfc7baaa49685b4752d2b224e4bd6be20709e34bea78f92de582a541ca625e09
