[INFO] fetching crate mime-plz 0.0.2...
[INFO] testing mime-plz-0.0.2 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate mime-plz 0.0.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mime-plz 0.0.2
[INFO] finished tweaking crates.io crate mime-plz 0.0.2
[INFO] tweaked toml for crates.io crate mime-plz 0.0.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mime-plz 0.0.2 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mime-plz 0.0.2 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" "+1.100.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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] 31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a
[INFO] running `Command { std: "docker" "start" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a", 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" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a", 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" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling mime-plz v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `mime-plz v0.0.2 (/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/mime-plz/5c2dbea941dc0cf4/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=./artifacts/db.json
[INFO] [stderr]   Building mime type database
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (308) panicked at build.rs:102:39:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5eb607dc74c1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x5eb607dd96fa - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x5eb607dcab8c - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x5eb607db0976 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x5eb607dc3201 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x5eb607dc33bb - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x5eb607db0a22 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x5eb607da98f9 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x5eb607db120d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x5eb607dd9e2c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x5eb607dd9c02 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stderr]     11:     0x5eb607d80069 - build_script_build[ac767fe32b0ad9ab]::write_file
[INFO] [stderr]     12:     0x5eb607d815ed - build_script_build[ac767fe32b0ad9ab]::main
[INFO] [stderr]     13:     0x5eb607d88f13 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     14:     0x5eb607d85756 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     15:     0x5eb607d86ac9 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     16:     0x5eb607dc29a8 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     17:     0x5eb607d84e61 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     18:     0x5eb607d84785 - main
[INFO] [stderr]     19:     0x7af4c8882601 - <unknown>
[INFO] [stderr]     20:     0x7af4c8882718 - __libc_start_main
[INFO] [stderr]     21:     0x5eb607d7c475 - _start
[INFO] [stderr]     22:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a", kill_on_drop: false }`
[INFO] [stdout] 31f739047c8e2443b10a6e648336c4cfa13f1684ad8dc5b073e821ae2f6bae6a
