[INFO] cloning repository https://github.com/tectin0/digraph-to-umlaut
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tectin0/digraph-to-umlaut" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftectin0%2Fdigraph-to-umlaut", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftectin0%2Fdigraph-to-umlaut'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28d7afdbeff761493ffc891f8b4fdb13e758daf7
[INFO] checking tectin0/digraph-to-umlaut against master#d2e8ecd8bd26a22111cdebfb813258450b07fbf0 for pr-121199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftectin0%2Fdigraph-to-umlaut" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tectin0/digraph-to-umlaut on toolchain d2e8ecd8bd26a22111cdebfb813258450b07fbf0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2e8ecd8bd26a22111cdebfb813258450b07fbf0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tectin0/digraph-to-umlaut
[INFO] finished tweaking git repo https://github.com/tectin0/digraph-to-umlaut
[INFO] tweaked toml for git repo https://github.com/tectin0/digraph-to-umlaut written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tectin0/digraph-to-umlaut 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" "+d2e8ecd8bd26a22111cdebfb813258450b07fbf0" "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 tectin0/digraph-to-umlaut against try#aface909a877127f24c62858518cef2d593e2ea1 for pr-121199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftectin0%2Fdigraph-to-umlaut" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tectin0/digraph-to-umlaut on toolchain aface909a877127f24c62858518cef2d593e2ea1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aface909a877127f24c62858518cef2d593e2ea1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tectin0/digraph-to-umlaut
[INFO] finished tweaking git repo https://github.com/tectin0/digraph-to-umlaut
[INFO] tweaked toml for git repo https://github.com/tectin0/digraph-to-umlaut written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tectin0/digraph-to-umlaut 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" "+aface909a877127f24c62858518cef2d593e2ea1" "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 tectin0/digraph-to-umlaut against try#aface909a877127f24c62858518cef2d593e2ea1 for pr-121199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftectin0%2Fdigraph-to-umlaut" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tectin0/digraph-to-umlaut on toolchain aface909a877127f24c62858518cef2d593e2ea1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aface909a877127f24c62858518cef2d593e2ea1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tectin0/digraph-to-umlaut
[INFO] finished tweaking git repo https://github.com/tectin0/digraph-to-umlaut
[INFO] tweaked toml for git repo https://github.com/tectin0/digraph-to-umlaut written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tectin0/digraph-to-umlaut 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" "+aface909a877127f24c62858518cef2d593e2ea1" "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 getrandom v0.2.10
[INFO] [stderr]   Downloaded toml v0.7.6
[INFO] [stderr]   Downloaded serde_spanned v0.6.3
[INFO] [stderr]   Downloaded equivalent v1.0.0
[INFO] [stderr]   Downloaded toml_datetime v0.6.3
[INFO] [stderr]   Downloaded toml_edit v0.19.12
[INFO] [stderr]   Downloaded memchr v2.5.0
[INFO] [stderr]   Downloaded itertools v0.10.5
[INFO] [stderr]   Downloaded indexmap v2.0.0
[INFO] [stderr]   Downloaded libc v0.2.147
[INFO] [stderr]   Downloaded hashbrown v0.14.0
[INFO] [stderr]   Downloaded winnow v0.4.7
[INFO] [stderr]   Downloaded serde v1.0.166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+aface909a877127f24c62858518cef2d593e2ea1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d9bd4b0cdc51393095e702da826797537f1f748b555c9c42839fc29f6bffa52
[INFO] running `Command { std: "docker" "start" "-a" "3d9bd4b0cdc51393095e702da826797537f1f748b555c9c42839fc29f6bffa52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d9bd4b0cdc51393095e702da826797537f1f748b555c9c42839fc29f6bffa52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9bd4b0cdc51393095e702da826797537f1f748b555c9c42839fc29f6bffa52", kill_on_drop: false }`
[INFO] [stdout] 3d9bd4b0cdc51393095e702da826797537f1f748b555c9c42839fc29f6bffa52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+aface909a877127f24c62858518cef2d593e2ea1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f29040bdca6bb6321992ad5dc33a102fe211912d629e3571d2836ba2fae5821
[INFO] running `Command { std: "docker" "start" "-a" "2f29040bdca6bb6321992ad5dc33a102fe211912d629e3571d2836ba2fae5821", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling serde v1.0.166
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking equivalent v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking winnow v0.4.7
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling digraph-to-umlaut v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr] error: failed to run custom build command for `digraph-to-umlaut v0.1.0 (/opt/rustwide/workdir)`
[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/digraph-to-umlaut-51e0606f59c30be1/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at build.rs:20:35:
[INFO] [stderr]   Failed to create build directory: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x558ec1a52356 - std::backtrace_rs::backtrace::libunwind::trace::he6ddf44678da14df
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x558ec1a52356 - std::backtrace_rs::backtrace::trace_unsynchronized::h131a018270c34e37
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x558ec1a52356 - std::sys_common::backtrace::_print_fmt::h18201e08e897b614
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x558ec1a52356 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h01b71de3c2fa2dc5
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x558ec1a7108c - core::fmt::rt::Argument::fmt::h33f93cee1b36524b
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x558ec1a7108c - core::fmt::write::h608c895057610197
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x558ec1a5025f - std::io::Write::write_fmt::hcb549e4efebe2b6b
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/io/mod.rs:1854:15
[INFO] [stderr]      7:     0x558ec1a52104 - std::sys_common::backtrace::_print::h2088961bfbdd1cef
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x558ec1a52104 - std::sys_common::backtrace::print::hcc5ece2b402d471d
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x558ec1a535fb - std::panicking::default_hook::{{closure}}::h205de1833e6b2a26
[INFO] [stderr]     10:     0x558ec1a53349 - std::panicking::default_hook::hbf56f8b0cb40bf04
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x558ec1a53a9d - std::panicking::rust_panic_with_hook::hbee43628b0a8f0b9
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:781:13
[INFO] [stderr]     12:     0x558ec1a53972 - std::panicking::begin_panic_handler::{{closure}}::hfc34eec86a683b00
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:659:13
[INFO] [stderr]     13:     0x558ec1a52836 - std::sys_common::backtrace::__rust_end_short_backtrace::hc86059e0e781d627
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x558ec1a536a4 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:647:5
[INFO] [stderr]     15:     0x558ec1a32145 - core::panicking::panic_fmt::h1ca13544381b066d
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x558ec1a325b3 - core::result::unwrap_failed::h2728df17c6532e01
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/core/src/result.rs:1653:5
[INFO] [stderr]     17:     0x558ec1a33f13 - core::result::Result<T,E>::expect::hf014b35a61f7291d
[INFO] [stderr]     18:     0x558ec1a358dc - build_script_build::main::h82eae701afc28a7d
[INFO] [stderr]     19:     0x558ec1a33683 - core::ops::function::FnOnce::call_once::h072b887acd4ea1cd
[INFO] [stderr]     20:     0x558ec1a32976 - std::sys_common::backtrace::__rust_begin_short_backtrace::hbf5917f36c799c1a
[INFO] [stderr]     21:     0x558ec1a333d9 - std::rt::lang_start::{{closure}}::hd247f5219366e829
[INFO] [stderr]     22:     0x558ec1a4d223 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h706fba31870a037c
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x558ec1a4d223 - std::panicking::try::do_call::h654cee209968d6ce
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:554:40
[INFO] [stderr]     24:     0x558ec1a4d223 - std::panicking::try::h4f476e3a8ae241c9
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:518:19
[INFO] [stderr]     25:     0x558ec1a4d223 - std::panic::catch_unwind::h41e7b01adeab227d
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panic.rs:142:14
[INFO] [stderr]     26:     0x558ec1a4d223 - std::rt::lang_start_internal::{{closure}}::hfa86bf4ee3860c94
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/rt.rs:148:48
[INFO] [stderr]     27:     0x558ec1a4d223 - std::panicking::try::do_call::hdb16880aee1786bf
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:554:40
[INFO] [stderr]     28:     0x558ec1a4d223 - std::panicking::try::ha6b0e938e0f62498
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panicking.rs:518:19
[INFO] [stderr]     29:     0x558ec1a4d223 - std::panic::catch_unwind::hda4868843c37b004
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/panic.rs:142:14
[INFO] [stderr]     30:     0x558ec1a4d223 - std::rt::lang_start_internal::h51143b78fb983e64
[INFO] [stderr]                                  at /rustc/aface909a877127f24c62858518cef2d593e2ea1/library/std/src/rt.rs:148:20
[INFO] [stderr]     31:     0x558ec1a333b7 - std::rt::lang_start::h5d110dbe10584f79
[INFO] [stderr]     32:     0x558ec1a36a25 - main
[INFO] [stderr]     33:     0x7f4d936ecd90 - <unknown>
[INFO] [stderr]     34:     0x7f4d936ece40 - __libc_start_main
[INFO] [stderr]     35:     0x558ec1a32725 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2f29040bdca6bb6321992ad5dc33a102fe211912d629e3571d2836ba2fae5821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f29040bdca6bb6321992ad5dc33a102fe211912d629e3571d2836ba2fae5821", kill_on_drop: false }`
[INFO] [stdout] 2f29040bdca6bb6321992ad5dc33a102fe211912d629e3571d2836ba2fae5821