[INFO] fetching crate wifi-qr-code 0.1.0...
[INFO] testing wifi-qr-code-0.1.0 against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] extracting crate wifi-qr-code 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate wifi-qr-code 0.1.0 on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wifi-qr-code 0.1.0
[INFO] finished tweaking crates.io crate wifi-qr-code 0.1.0
[INFO] tweaked toml for crates.io crate wifi-qr-code 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate wifi-qr-code 0.1.0 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" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 773b891c429d5082b5778821b84cfea92db1d98b83e6243c4af9356d88943e5d
[INFO] running `Command { std: "docker" "start" "-a" "773b891c429d5082b5778821b84cfea92db1d98b83e6243c4af9356d88943e5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "773b891c429d5082b5778821b84cfea92db1d98b83e6243c4af9356d88943e5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "773b891c429d5082b5778821b84cfea92db1d98b83e6243c4af9356d88943e5d", kill_on_drop: false }`
[INFO] [stdout] 773b891c429d5082b5778821b84cfea92db1d98b83e6243c4af9356d88943e5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6c7b979be0a561821880fc3d97aa59b501bd168e4111eeb103df6c020ca1174
[INFO] running `Command { std: "docker" "start" "-a" "d6c7b979be0a561821880fc3d97aa59b501bd168e4111eeb103df6c020ca1174", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling color_quant v1.0.1
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling gif v0.10.3
[INFO] [stderr]    Compiling qrcodegen v1.4.0
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling rc-writer v1.1.6
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling image v0.20.1
[INFO] [stderr]    Compiling qrcode-generator v1.0.5
[INFO] [stderr]    Compiling wifi-qr-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.88s
[INFO] running `Command { std: "docker" "inspect" "d6c7b979be0a561821880fc3d97aa59b501bd168e4111eeb103df6c020ca1174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6c7b979be0a561821880fc3d97aa59b501bd168e4111eeb103df6c020ca1174", kill_on_drop: false }`
[INFO] [stdout] d6c7b979be0a561821880fc3d97aa59b501bd168e4111eeb103df6c020ca1174
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e86cfb8e71c7230726e6804733d3aafb4014d14d746d2159561ce0a87ad43da
[INFO] running `Command { std: "docker" "start" "-a" "3e86cfb8e71c7230726e6804733d3aafb4014d14d746d2159561ce0a87ad43da", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling rpassword v4.0.3
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.5
[INFO] [stderr]    Compiling structopt v0.3.5
[INFO] [stderr]    Compiling wifi-qr-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.55s
[INFO] running `Command { std: "docker" "inspect" "3e86cfb8e71c7230726e6804733d3aafb4014d14d746d2159561ce0a87ad43da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e86cfb8e71c7230726e6804733d3aafb4014d14d746d2159561ce0a87ad43da", kill_on_drop: false }`
[INFO] [stdout] 3e86cfb8e71c7230726e6804733d3aafb4014d14d746d2159561ce0a87ad43da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 54d3f88b8e940b30626c785afae9d0d3fbecc8d01847ef4d2458dc2b916ed33c
[INFO] running `Command { std: "docker" "start" "-a" "54d3f88b8e940b30626c785afae9d0d3fbecc8d01847ef4d2458dc2b916ed33c", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wifi_qr_code-0731a4dd2670f3d6)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::it_encodes_valid_wifi_forms ... ok
[INFO] [stdout] test tests::it_properly_handles_escaped_characters ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wifi_qr_code
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - WifiCredentials::encode (line 178) ... ok
[INFO] [stdout] test src/lib.rs - encode_as_image (line 37) ... ok
[INFO] [stdout] test src/lib.rs - encode_as_png (line 64) ... FAILED
[INFO] [stdout] test src/lib.rs - encode_as_svg (line 96) ... FAILED
[INFO] [stdout] test src/lib.rs - encode_as_matrix (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - encode_as_png (line 64) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:15:44:
[INFO] [stdout] Failed to create example PNG file.: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c5fa8799b4a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5c5fa8799b4a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5c5fa8799b4a - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5c5fa8799b4a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5c5fa87b59b3 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5c5fa87b59b3 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x5c5fa87978c3 - std::io::Write::write_fmt::hc00bff0a88e08857
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x5c5fa8799992 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5c5fa879a95c - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5c5fa879a7a2 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:295:9
[INFO] [stdout]   10:     0x5c5fa879af37 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:801:13
[INFO] [stdout]   11:     0x5c5fa879adca - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13
[INFO] [stdout]   12:     0x5c5fa879a029 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   13:     0x5c5fa879aa5c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   14:     0x5c5fa8731150 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   15:     0x5c5fa8731566 - core::result::unwrap_failed::h05e0602ed34287c5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5
[INFO] [stdout]   16:     0x5c5fa8733f5c - core::result::Result<T,E>::expect::hcfdaa8d882df169a
[INFO] [stdout]   17:     0x5c5fa8734654 - rust_out::main::_doctest_main_src_lib_rs_64_0::hacbe7867ba772f59
[INFO] [stdout]   18:     0x5c5fa8734526 - rust_out::main::h57eefffa92e38ed0
[INFO] [stdout]   19:     0x5c5fa8733d43 - core::ops::function::FnOnce::call_once::hcb3872443a25b5b7
[INFO] [stdout]   20:     0x5c5fa8733ce6 - std::sys::backtrace::__rust_begin_short_backtrace::hb8f53f53663d2e9e
[INFO] [stdout]   21:     0x5c5fa8733b39 - std::rt::lang_start::{{closure}}::h0d6bdb8cb611c7e9
[INFO] [stdout]   22:     0x5c5fa8795b77 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hba2470d01d3f5e41
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   23:     0x5c5fa8795b77 - std::panicking::try::do_call::hc063fb73159aab72
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   24:     0x5c5fa8795b77 - std::panicking::try::h2767c6d245d3a3bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   25:     0x5c5fa8795b77 - std::panic::catch_unwind::h061c6ef75790da63
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   26:     0x5c5fa8795b77 - std::rt::lang_start_internal::{{closure}}::h5c5e35b11a4b8c4e
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/rt.rs:174:48
[INFO] [stdout]   27:     0x5c5fa8795b77 - std::panicking::try::do_call::h705e99690a8109cc
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   28:     0x5c5fa8795b77 - std::panicking::try::he5f4452754ed9a34
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   29:     0x5c5fa8795b77 - std::panic::catch_unwind::h5db61b3bcbe883e5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x5c5fa8795b77 - std::rt::lang_start_internal::h81da9b59bab665c6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/rt.rs:174:20
[INFO] [stdout]   31:     0x5c5fa8733b17 - std::rt::lang_start::h2798034e47ddebf9
[INFO] [stdout]   32:     0x5c5fa87346e5 - main
[INFO] [stdout]   33:     0x738c517e8d90 - <unknown>
[INFO] [stdout]   34:     0x738c517e8e40 - __libc_start_main
[INFO] [stdout]   35:     0x5c5fa87319c5 - _start
[INFO] [stdout]   36:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - encode_as_svg (line 96) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:15:44:
[INFO] [stdout] Failed to create example SVG file.: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x572f3f85a19a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x572f3f85a19a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x572f3f85a19a - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x572f3f85a19a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x572f3f875fd3 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x572f3f875fd3 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x572f3f857f13 - std::io::Write::write_fmt::hc00bff0a88e08857
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x572f3f859fe2 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x572f3f85afac - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x572f3f85adf2 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:295:9
[INFO] [stdout]   10:     0x572f3f85b587 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:801:13
[INFO] [stdout]   11:     0x572f3f85b41a - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13
[INFO] [stdout]   12:     0x572f3f85a679 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   13:     0x572f3f85b0ac - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   14:     0x572f3f816110 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   15:     0x572f3f816526 - core::result::unwrap_failed::h05e0602ed34287c5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5
[INFO] [stdout]   16:     0x572f3f818e8c - core::result::Result<T,E>::expect::hcfdaa8d882df169a
[INFO] [stdout]   17:     0x572f3f819064 - rust_out::main::_doctest_main_src_lib_rs_96_0::h48dfe84f7063f749
[INFO] [stdout]   18:     0x572f3f818f36 - rust_out::main::h57eefffa92e38ed0
[INFO] [stdout]   19:     0x572f3f818d63 - core::ops::function::FnOnce::call_once::hcb3872443a25b5b7
[INFO] [stdout]   20:     0x572f3f818cf6 - std::sys::backtrace::__rust_begin_short_backtrace::hb8f53f53663d2e9e
[INFO] [stdout]   21:     0x572f3f818cd9 - std::rt::lang_start::{{closure}}::h0d6bdb8cb611c7e9
[INFO] [stdout]   22:     0x572f3f856247 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hba2470d01d3f5e41
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   23:     0x572f3f856247 - std::panicking::try::do_call::hc063fb73159aab72
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   24:     0x572f3f856247 - std::panicking::try::h2767c6d245d3a3bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   25:     0x572f3f856247 - std::panic::catch_unwind::h061c6ef75790da63
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   26:     0x572f3f856247 - std::rt::lang_start_internal::{{closure}}::h5c5e35b11a4b8c4e
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/rt.rs:174:48
[INFO] [stdout]   27:     0x572f3f856247 - std::panicking::try::do_call::h705e99690a8109cc
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   28:     0x572f3f856247 - std::panicking::try::he5f4452754ed9a34
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   29:     0x572f3f856247 - std::panic::catch_unwind::h5db61b3bcbe883e5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x572f3f856247 - std::rt::lang_start_internal::h81da9b59bab665c6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/rt.rs:174:20
[INFO] [stdout]   31:     0x572f3f818cb7 - std::rt::lang_start::h2798034e47ddebf9
[INFO] [stdout]   32:     0x572f3f819125 - main
[INFO] [stdout]   33:     0x7900de2bcd90 - <unknown>
[INFO] [stdout]   34:     0x7900de2bce40 - __libc_start_main
[INFO] [stdout]   35:     0x572f3f816985 - _start
[INFO] [stdout]   36:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - encode_as_png (line 64)
[INFO] [stdout]     src/lib.rs - encode_as_svg (line 96)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.43s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "54d3f88b8e940b30626c785afae9d0d3fbecc8d01847ef4d2458dc2b916ed33c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54d3f88b8e940b30626c785afae9d0d3fbecc8d01847ef4d2458dc2b916ed33c", kill_on_drop: false }`
[INFO] [stdout] 54d3f88b8e940b30626c785afae9d0d3fbecc8d01847ef4d2458dc2b916ed33c
