[INFO] fetching crate png_pong 0.7.0... [INFO] testing png_pong-0.7.0 against beta-2021-01-01 for beta-1.50-1 [INFO] extracting crate png_pong 0.7.0 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate png_pong 0.7.0 on toolchain beta-2021-01-01 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate png_pong 0.7.0 [INFO] finished tweaking crates.io crate png_pong 0.7.0 [INFO] tweaked toml for crates.io crate png_pong 0.7.0 written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate crates.io crate png_pong 0.7.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pix v0.13.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 81f878673dcea5de95cddcd3a5576bc39e9d4efd54ef075049284a185bfeabcf [INFO] running `Command { std: "docker" "start" "-a" "81f878673dcea5de95cddcd3a5576bc39e9d4efd54ef075049284a185bfeabcf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "81f878673dcea5de95cddcd3a5576bc39e9d4efd54ef075049284a185bfeabcf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81f878673dcea5de95cddcd3a5576bc39e9d4efd54ef075049284a185bfeabcf", kill_on_drop: false }` [INFO] [stdout] 81f878673dcea5de95cddcd3a5576bc39e9d4efd54ef075049284a185bfeabcf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] edb9cd2af515eb8e539b82fbce1c8e0c3741b19ac2c5103f884452480c58f251 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "edb9cd2af515eb8e539b82fbce1c8e0c3741b19ac2c5103f884452480c58f251", kill_on_drop: false }` [INFO] [stderr] Compiling pix v0.13.1 [INFO] [stderr] Compiling adler v0.2.3 [INFO] [stderr] Compiling miniz_oxide v0.4.0 [INFO] [stderr] Compiling png_pong v0.7.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [optimized + debuginfo] target(s) in 8.35s [INFO] running `Command { std: "docker" "inspect" "edb9cd2af515eb8e539b82fbce1c8e0c3741b19ac2c5103f884452480c58f251", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "edb9cd2af515eb8e539b82fbce1c8e0c3741b19ac2c5103f884452480c58f251", kill_on_drop: false }` [INFO] [stdout] edb9cd2af515eb8e539b82fbce1c8e0c3741b19ac2c5103f884452480c58f251 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a23107fb9624381e7f6d9f856636e06c79cf9d6d9e0f7363ca5d8c2e415ca43b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a23107fb9624381e7f6d9f856636e06c79cf9d6d9e0f7363ca5d8c2e415ca43b", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling serde v1.0.114 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling libc v0.2.72 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling rayon-core v1.7.1 [INFO] [stderr] Compiling itoa v0.4.6 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling syn v1.0.34 [INFO] [stderr] Compiling serde_json v1.0.56 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling serde_derive v1.0.114 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling regex-syntax v0.6.18 [INFO] [stderr] Compiling half v1.6.0 [INFO] [stderr] Compiling oorandom v11.1.2 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling walkdir v2.3.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.5 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling rayon v1.3.1 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stderr] Compiling regex v1.3.9 [INFO] [stderr] Compiling regex-automata v0.1.9 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling clap v2.33.1 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling crossbeam-queue v0.2.3 [INFO] [stderr] Compiling criterion-plot v0.4.3 [INFO] [stderr] Compiling crossbeam-deque v0.7.3 [INFO] [stderr] Compiling plotters v0.2.15 [INFO] [stderr] Compiling bstr v0.2.13 [INFO] [stderr] Compiling serde_cbor v0.11.1 [INFO] [stderr] Compiling csv v1.1.3 [INFO] [stderr] Compiling tinytemplate v1.1.0 [INFO] [stderr] Compiling criterion v0.3.3 [INFO] [stderr] Compiling png_pong v0.7.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [optimized + debuginfo] target(s) in 3m 20s [INFO] running `Command { std: "docker" "inspect" "a23107fb9624381e7f6d9f856636e06c79cf9d6d9e0f7363ca5d8c2e415ca43b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a23107fb9624381e7f6d9f856636e06c79cf9d6d9e0f7363ca5d8c2e415ca43b", kill_on_drop: false }` [INFO] [stdout] a23107fb9624381e7f6d9f856636e06c79cf9d6d9e0f7363ca5d8c2e415ca43b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 14ba4bdb5e09172a4a027ff009a65e794b41ae7681f8e52c2103a187e3eb8ecc [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "14ba4bdb5e09172a4a027ff009a65e794b41ae7681f8e52c2103a187e3eb8ecc", kill_on_drop: false }` [INFO] [stderr] Finished test [optimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/png_pong-1e85078f520958f5 [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 png_pong [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 21) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 21) stdout ---- [INFO] [stdout] Test executable failed (exit code 101). [INFO] [stdout] [INFO] [stdout] stderr: [INFO] [stdout] thread 'main' panicked at 'Failed to save image: Os { code: 30, kind: Other, message: "Read-only file system" }', src/lib.rs:12:41 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5558e1928797 - std::backtrace_rs::backtrace::libunwind::trace::hcd6e187547b8deec [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stdout] 1: 0x5558e1928797 - std::backtrace_rs::backtrace::trace_unsynchronized::hde10036eb783fbc7 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5558e1928797 - std::sys_common::backtrace::_print_fmt::h63987b8f86dfc82a [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x5558e1928797 - ::fmt::hc33f3ac4cc9c4196 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x5558e193f1bc - core::fmt::write::hfdcdeb08fb2b3afa [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/fmt/mod.rs:1078:17 [INFO] [stdout] 5: 0x5558e1926bc2 - std::io::Write::write_fmt::h83a843778fa2a815 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/io/mod.rs:1519:15 [INFO] [stdout] 6: 0x5558e192a4d5 - std::sys_common::backtrace::_print::hf179508b01f66878 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x5558e192a4d5 - std::sys_common::backtrace::print::ha97d11adb39266a6 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x5558e192a4d5 - std::panicking::default_hook::{{closure}}::h8da9985a98bd1582 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:208:50 [INFO] [stdout] 9: 0x5558e192a02a - std::panicking::default_hook::hbc0ee792993c2ef2 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:225:9 [INFO] [stdout] 10: 0x5558e192ac71 - std::panicking::rust_panic_with_hook::h9fb9cda33a10f084 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:591:17 [INFO] [stdout] 11: 0x5558e192a7b7 - std::panicking::begin_panic_handler::{{closure}}::hf3e83396e085962e [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:497:13 [INFO] [stdout] 12: 0x5558e1928c5c - std::sys_common::backtrace::__rust_end_short_backtrace::hac151ac4c1e3252d [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stdout] 13: 0x5558e192a719 - rust_begin_unwind [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:493:5 [INFO] [stdout] 14: 0x5558e193e591 - core::panicking::panic_fmt::hf6d8a92b065b8f97 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/panicking.rs:92:14 [INFO] [stdout] 15: 0x5558e193e3b3 - core::option::expect_none_failed::ha72f299eca314ad7 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/option.rs:1268:5 [INFO] [stdout] 16: 0x5558e18e44da - core::result::Result::expect::ha5e09e64799a9ba6 [INFO] [stdout] 17: 0x5558e18fe36c - rust_out::main::_doctest_main_src_lib_rs_21_0::h5ca2059347ce5953 [INFO] [stdout] 18: 0x5558e18fe096 - rust_out::main::h405f65324f7b53be [INFO] [stdout] 19: 0x5558e18dd203 - core::ops::function::FnOnce::call_once::h2f28b12db24480a4 [INFO] [stdout] 20: 0x5558e18db409 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7ff69755847bac0f [INFO] [stdout] 21: 0x5558e18dbb09 - std::rt::lang_start::{{closure}}::h8f8fe4b1b4c3ba44 [INFO] [stdout] 22: 0x5558e192b097 - core::ops::function::impls:: for &F>::call_once::hb5ab992a536e3d7c [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:259:13 [INFO] [stdout] 23: 0x5558e192b097 - std::panicking::try::do_call::h1bda883686bc1816 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:379:40 [INFO] [stdout] 24: 0x5558e192b097 - std::panicking::try::ha7167c079f243e71 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:343:19 [INFO] [stdout] 25: 0x5558e192b097 - std::panic::catch_unwind::he11c3de53f0b5853 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:396:14 [INFO] [stdout] 26: 0x5558e192b097 - std::rt::lang_start_internal::h45c3666b51d25060 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:51:25 [INFO] [stdout] 27: 0x5558e18dbae8 - std::rt::lang_start::hd3cc8db4b735f367 [INFO] [stdout] 28: 0x5558e18fe61b - main [INFO] [stdout] 29: 0x7f161f8280b3 - __libc_start_main [INFO] [stdout] 30: 0x5558e18da0ae - _start [INFO] [stdout] 31: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 21) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.50s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "14ba4bdb5e09172a4a027ff009a65e794b41ae7681f8e52c2103a187e3eb8ecc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "14ba4bdb5e09172a4a027ff009a65e794b41ae7681f8e52c2103a187e3eb8ecc", kill_on_drop: false }` [INFO] [stdout] 14ba4bdb5e09172a4a027ff009a65e794b41ae7681f8e52c2103a187e3eb8ecc