[INFO] fetching crate qrcode-png 0.4.1...
[INFO] testing qrcode-png-0.4.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate qrcode-png 0.4.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate qrcode-png 0.4.1
[INFO] finished tweaking crates.io crate qrcode-png 0.4.1
[INFO] tweaked toml for crates.io crate qrcode-png 0.4.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate qrcode-png 0.4.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate qrcode-png 0.4.1 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.17.6
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1476bb512c209b5ccb0a0b97c5b2a4c7155ed01af80b2afab42055f84753be28
[INFO] running `Command { std: "docker" "start" "-a" "1476bb512c209b5ccb0a0b97c5b2a4c7155ed01af80b2afab42055f84753be28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1476bb512c209b5ccb0a0b97c5b2a4c7155ed01af80b2afab42055f84753be28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1476bb512c209b5ccb0a0b97c5b2a4c7155ed01af80b2afab42055f84753be28", kill_on_drop: false }`
[INFO] [stdout] 1476bb512c209b5ccb0a0b97c5b2a4c7155ed01af80b2afab42055f84753be28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d857e6aa9cc1a317e3c90310b83c6c0e9ff4bc6775a7cdb0469f89ed2d62764b
[INFO] running `Command { std: "docker" "start" "-a" "d857e6aa9cc1a317e3c90310b83c6c0e9ff4bc6775a7cdb0469f89ed2d62764b", kill_on_drop: false }`
[INFO] [stderr]    Compiling qrcodegen v1.8.0
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling flate2 v1.0.24
[INFO] [stderr]    Compiling png v0.17.6
[INFO] [stderr]    Compiling qrcode-png v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "d857e6aa9cc1a317e3c90310b83c6c0e9ff4bc6775a7cdb0469f89ed2d62764b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d857e6aa9cc1a317e3c90310b83c6c0e9ff4bc6775a7cdb0469f89ed2d62764b", kill_on_drop: false }`
[INFO] [stdout] d857e6aa9cc1a317e3c90310b83c6c0e9ff4bc6775a7cdb0469f89ed2d62764b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9a6616b939f5e13c78a0d315a3f3ecba0ed6f5104e25f18569703d8a452456c
[INFO] running `Command { std: "docker" "start" "-a" "e9a6616b939f5e13c78a0d315a3f3ecba0ed6f5104e25f18569703d8a452456c", kill_on_drop: false }`
[INFO] [stderr]    Compiling qrcode-png v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "e9a6616b939f5e13c78a0d315a3f3ecba0ed6f5104e25f18569703d8a452456c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a6616b939f5e13c78a0d315a3f3ecba0ed6f5104e25f18569703d8a452456c", kill_on_drop: false }`
[INFO] [stdout] e9a6616b939f5e13c78a0d315a3f3ecba0ed6f5104e25f18569703d8a452456c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 914fed2e474f32e2ca0d4a252d489f509625b6867d6846271170734f7b929776
[INFO] running `Command { std: "docker" "start" "-a" "914fed2e474f32e2ca0d4a252d489f509625b6867d6846271170734f7b929776", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/qrcode_png-f6127c648d8e821e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests qrcode_png
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 2) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 2) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (40) panicked at src/lib.rs:13:44:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5f289fdb9732 - std::backtrace_rs::backtrace::libunwind::trace::h76861be37b31432e
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5f289fdb9732 - std::backtrace_rs::backtrace::trace_unsynchronized::h58d4003082192c17
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5f289fdb9732 - std::sys::backtrace::_print_fmt::hfe5857a399620d2a
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5f289fdb9732 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h52160e9da139e442
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5f289fdc8d7f - core::fmt::rt::Argument::fmt::h66fe6fef9ecca14a
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5f289fdc8d7f - core::fmt::write::hf09a056a304e021a
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5f289fd97671 - std::io::default_write_fmt::h7567c5950fb0173c
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5f289fd97671 - std::io::Write::write_fmt::h361c7127187cda65
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5f289fd9ca82 - std::sys::backtrace::BacktraceLock::print::h15104dbcf0fd1f14
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5f289fd9e33c - std::panicking::default_hook::{{closure}}::h0fa6cd8dbe0dd76b
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5f289fd9e196 - std::panicking::default_hook::h8d20506cf72e4831
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:328:9
[INFO] [stdout]   11:     0x5f289fd9e9c5 - std::panicking::panic_with_hook::h746880a052e02c85
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:834:13
[INFO] [stdout]   12:     0x5f289fd9e85a - std::panicking::panic_handler::{{closure}}::h14b95830f89d14b3
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:707:13
[INFO] [stdout]   13:     0x5f289fd9cbb9 - std::sys::backtrace::__rust_end_short_backtrace::h7ddaac0e9609a83d
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   14:     0x5f289fd8c02d - __rustc[76f7e7187978e2f8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:698:5
[INFO] [stdout]   15:     0x5f289fdcc4d0 - core::panicking::panic_fmt::heb245a301f4395db
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panicking.rs:78:14
[INFO] [stdout]   16:     0x5f289fdcbaa6 - core::result::unwrap_failed::h91bd1e1731f928fc
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/result.rs:1855:5
[INFO] [stdout]   17:     0x5f289fd40d7c - rust_out::main::_doctest_main_src_lib_rs_2_0::hf1b23d295d85300b
[INFO] [stdout]   18:     0x5f289fd409b6 - rust_out::main::h2c0b889d96022a4f
[INFO] [stdout]   19:     0x5f289fd3fef3 - core::ops::function::FnOnce::call_once::h064b3222b538a73a
[INFO] [stdout]   20:     0x5f289fd3fdd6 - std::sys::backtrace::__rust_begin_short_backtrace::h5b0a4898ae968de4
[INFO] [stdout]   21:     0x5f289fd3fdb9 - std::rt::lang_start::{{closure}}::h6185b2e9f14a2cbb
[INFO] [stdout]   22:     0x5f289fd98af0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h92f7271baace0227
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   23:     0x5f289fd98af0 - std::panicking::catch_unwind::do_call::hab80bc7615f9a56f
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40
[INFO] [stdout]   24:     0x5f289fd98af0 - std::panicking::catch_unwind::h44920ff533ed11dd
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19
[INFO] [stdout]   25:     0x5f289fd98af0 - std::panic::catch_unwind::hbc4760794652046f
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14
[INFO] [stdout]   26:     0x5f289fd98af0 - std::rt::lang_start_internal::{{closure}}::h017b9ee7d9dfccf2
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/rt.rs:175:24
[INFO] [stdout]   27:     0x5f289fd98af0 - std::panicking::catch_unwind::do_call::h5c448dae61c3a22b
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5f289fd98af0 - std::panicking::catch_unwind::ha3a2750d16137715
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5f289fd98af0 - std::panic::catch_unwind::ha56344eb931bca1a
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5f289fd98af0 - std::rt::lang_start_internal::h4e6c18fadc4e7470
[INFO] [stdout]                                at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/rt.rs:171:5
[INFO] [stdout]   31:     0x5f289fd3fda1 - std::rt::lang_start::hc4342c866dfc26c3
[INFO] [stdout]   32:     0x5f289fd414a5 - main
[INFO] [stdout]   33:     0x7e6141f331ca - <unknown>
[INFO] [stdout]   34:     0x7e6141f3328b - __libc_start_main
[INFO] [stdout]   35:     0x5f289fd3fa15 - _start
[INFO] [stdout]   36:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 2)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "914fed2e474f32e2ca0d4a252d489f509625b6867d6846271170734f7b929776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "914fed2e474f32e2ca0d4a252d489f509625b6867d6846271170734f7b929776", kill_on_drop: false }`
[INFO] [stdout] 914fed2e474f32e2ca0d4a252d489f509625b6867d6846271170734f7b929776