[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] testing tectin0/digraph-to-umlaut against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftectin0%2Fdigraph-to-umlaut" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tectin0/digraph-to-umlaut on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a3b38b3adee0c8a8e8eb16db2a6648199565b57a2225a11ba55746f52080144
[INFO] running `Command { std: "docker" "start" "-a" "5a3b38b3adee0c8a8e8eb16db2a6648199565b57a2225a11ba55746f52080144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a3b38b3adee0c8a8e8eb16db2a6648199565b57a2225a11ba55746f52080144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a3b38b3adee0c8a8e8eb16db2a6648199565b57a2225a11ba55746f52080144", kill_on_drop: false }`
[INFO] [stdout] 5a3b38b3adee0c8a8e8eb16db2a6648199565b57a2225a11ba55746f52080144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ae13acac3a45d4c8fa254f29c2cfe67b75bd582240c0778cbc97663aac1f27a
[INFO] running `Command { std: "docker" "start" "-a" "5ae13acac3a45d4c8fa254f29c2cfe67b75bd582240c0778cbc97663aac1f27a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling serde v1.0.166
[INFO] [stderr]    Compiling equivalent v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling winnow v0.4.7
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling digraph-to-umlaut v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling 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-4ff7e4886ce4f85d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (95) 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:     0x6442b693f70a - std[ec4e911328de40a6]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x6442b693f70a - std[ec4e911328de40a6]::backtrace_rs::backtrace::trace_unsynchronized::<std[ec4e911328de40a6]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x6442b693f70a - std[ec4e911328de40a6]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x6442b693f70a - <<std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a96a4c5c53f902a3]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x6442b695075a - <core[a96a4c5c53f902a3]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x6442b695075a - core[a96a4c5c53f902a3]::fmt::write
[INFO] [stderr]      6:     0x6442b6943602 - std[ec4e911328de40a6]::io::default_write_fmt::<std[ec4e911328de40a6]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x6442b6943602 - <std[ec4e911328de40a6]::sys::stdio::unix::Stderr as std[ec4e911328de40a6]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x6442b692903f - <std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x6442b692903f - std[ec4e911328de40a6]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x6442b693a651 - std[ec4e911328de40a6]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x6442b693a80b - std[ec4e911328de40a6]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x6442b69290f8 - std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x6442b6920c59 - std[ec4e911328de40a6]::sys::backtrace::__rust_end_short_backtrace::<std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x6442b69298dd - __rustc[aa69f48705c57ca8]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x6442b6950e4c - core[a96a4c5c53f902a3]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x6442b6950c22 - core[a96a4c5c53f902a3]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x6442b6911f20 - <core[a96a4c5c53f902a3]::result::Result<(), std[ec4e911328de40a6]::io::error::Error>>::expect
[INFO] [stderr]     18:     0x6442b6911d14 - build_script_build[93443dd39e5cfdea]::main
[INFO] [stderr]     19:     0x6442b69135b3 - <fn() -> core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::boxed::Box<dyn core[a96a4c5c53f902a3]::error::Error>> as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x6442b69116d6 - std[ec4e911328de40a6]::sys::backtrace::__rust_begin_short_backtrace::<fn() -> core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::boxed::Box<dyn core[a96a4c5c53f902a3]::error::Error>>, core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::boxed::Box<dyn core[a96a4c5c53f902a3]::error::Error>>>
[INFO] [stderr]     21:     0x6442b6911919 - std[ec4e911328de40a6]::rt::lang_start::<core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::boxed::Box<dyn core[a96a4c5c53f902a3]::error::Error>>>::{closure#0}
[INFO] [stderr]     22:     0x6442b6939c94 - <&dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x6442b6939c94 - std[ec4e911328de40a6]::panicking::catch_unwind::do_call::<&dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:581:40
[INFO] [stderr]     24:     0x6442b6939c94 - std[ec4e911328de40a6]::panicking::catch_unwind::<i32, &dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:544:19
[INFO] [stderr]     25:     0x6442b6939c94 - std[ec4e911328de40a6]::panic::catch_unwind::<&dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x6442b6939c94 - std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x6442b6939c94 - std[ec4e911328de40a6]::panicking::catch_unwind::do_call::<std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:581:40
[INFO] [stderr]     28:     0x6442b6939c94 - std[ec4e911328de40a6]::panicking::catch_unwind::<isize, std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:544:19
[INFO] [stderr]     29:     0x6442b6939c94 - std[ec4e911328de40a6]::panic::catch_unwind::<std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x6442b6939c94 - std[ec4e911328de40a6]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x6442b6911651 - std[ec4e911328de40a6]::rt::lang_start::<core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::boxed::Box<dyn core[a96a4c5c53f902a3]::error::Error>>>
[INFO] [stderr]     32:     0x6442b69136e5 - main
[INFO] [stderr]     33:     0x725e1a85a1ca - <unknown>
[INFO] [stderr]     34:     0x725e1a85a28b - __libc_start_main
[INFO] [stderr]     35:     0x6442b690f9a5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5ae13acac3a45d4c8fa254f29c2cfe67b75bd582240c0778cbc97663aac1f27a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae13acac3a45d4c8fa254f29c2cfe67b75bd582240c0778cbc97663aac1f27a", kill_on_drop: false }`
[INFO] [stdout] 5ae13acac3a45d4c8fa254f29c2cfe67b75bd582240c0778cbc97663aac1f27a
