[INFO] fetching crate guzzle 1.0.0...
[INFO] testing guzzle-1.0.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate guzzle 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate guzzle 1.0.0
[INFO] finished tweaking crates.io crate guzzle 1.0.0
[INFO] tweaked toml for crates.io crate guzzle 1.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate guzzle 1.0.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml v1.1.8+spec-1.1.0
[INFO] [stderr]   Downloaded trybuild v1.0.122
[INFO] [stderr]   Downloaded guzzle-derive v1.0.0
[INFO] [stderr]   Downloaded toml_writer v1.1.3+spec-1.1.0
[INFO] [stderr]   Downloaded target-tuple v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3
[INFO] running `Command { std: "docker" "start" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v1.1.5
[INFO] [stderr]    Compiling regex-syntax v0.8.11
[INFO] [stderr]    Compiling guzzle-derive v1.0.0
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling regex v1.13.1
[INFO] [stderr]    Compiling guzzle v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `guzzle v1.0.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_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/release/build/guzzle-e8a72153a498d74e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (182) panicked at build.rs:25:49:
[INFO] [stderr]   Could not write to README.md: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x582935bd8471 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x582935beadba - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x582935bdbdcc - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x582935bbf016 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x582935bd1ff1 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x582935bd21ab - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x582935bbf0c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x582935bb81c9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x582935bbfc2d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stderr]      9:     0x582935beb5dc - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stderr]     10:     0x582935beb3b2 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stderr]     11:     0x5829359cfe20 - <core[df12db4294e9bfd3]::result::Result<(), core[df12db4294e9bfd3]::io::error::Error>>::expect
[INFO] [stderr]     12:     0x5829359cf7e9 - build_script_build[8ef155ae39cd78f3]::create_readme
[INFO] [stderr]     13:     0x5829359cfad9 - build_script_build[8ef155ae39cd78f3]::main
[INFO] [stderr]     14:     0x5829359d2e13 - <fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::boxed::Box<dyn core[df12db4294e9bfd3]::error::Error>> as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     15:     0x5829359ce51e - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::boxed::Box<dyn core[df12db4294e9bfd3]::error::Error>>, core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::boxed::Box<dyn core[df12db4294e9bfd3]::error::Error>>>
[INFO] [stderr]     16:     0x5829359cf269 - std[70759c8f55707aa4]::rt::lang_start::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::boxed::Box<dyn core[df12db4294e9bfd3]::error::Error>>>::{closure#0}
[INFO] [stderr]     17:     0x582935bd1759 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     18:     0x5829359cddd1 - std[70759c8f55707aa4]::rt::lang_start::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::boxed::Box<dyn core[df12db4294e9bfd3]::error::Error>>>
[INFO] [stderr]     19:     0x5829359d2f05 - main
[INFO] [stderr]     20:     0x78cfa2053601 - <unknown>
[INFO] [stderr]     21:     0x78cfa2053718 - __libc_start_main
[INFO] [stderr]     22:     0x5829359ccc85 - _start
[INFO] [stderr]     23:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3", kill_on_drop: false }`
[INFO] [stdout] 12f7683238d157c08fcb802fbfd20fef702ab5d8c943be75e74f6d2262f5a7b3
