[INFO] cloning repository https://github.com/jonay2000/weblab-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonay2000/weblab-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonay2000%2Fweblab-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonay2000%2Fweblab-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1005657d469298e07e5918cd3ea289738bb531af
[INFO] testing jonay2000/weblab-rs against 1.98.0-beta.8+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonay2000%2Fweblab-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jonay2000/weblab-rs
[INFO] finished tweaking git repo https://github.com/jonay2000/weblab-rs
[INFO] tweaked toml for git repo https://github.com/jonay2000/weblab-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jonay2000/weblab-rs on toolchain 1.98.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jonay2000/weblab-rs 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" "+1.98.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.15
[INFO] [stderr]   Downloaded time v0.1.43
[INFO] [stderr]   Downloaded tokio-macros v1.7.0
[INFO] [stderr]   Downloaded signal-hook-registry v1.4.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.36
[INFO] [stderr]   Downloaded zip v0.5.13
[INFO] [stderr]   Downloaded futures-sink v0.3.21
[INFO] [stderr]   Downloaded futures-core v0.3.21
[INFO] [stderr]   Downloaded num_cpus v1.13.1
[INFO] [stderr]   Downloaded pathdiff v0.2.1
[INFO] [stderr]   Downloaded heck v0.4.0
[INFO] [stderr]   Downloaded strsim v0.10.0
[INFO] [stderr]   Downloaded fixedbitset v0.4.1
[INFO] [stderr]   Downloaded quickcheck_macros v1.0.0
[INFO] [stderr]   Downloaded quick-error v1.2.3
[INFO] [stderr]   Downloaded futures-io v0.3.21
[INFO] [stderr]   Downloaded futures-macro v0.3.21
[INFO] [stderr]   Downloaded slab v0.4.5
[INFO] [stderr]   Downloaded pretty_env_logger v0.4.0
[INFO] [stderr]   Downloaded lock_api v0.4.6
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.16
[INFO] [stderr]   Downloaded humantime v1.3.0
[INFO] [stderr]   Downloaded futures-task v0.3.21
[INFO] [stderr]   Downloaded simple_xml_serialize_macro v0.3.0
[INFO] [stderr]   Downloaded path-slash v0.1.4
[INFO] [stderr]   Downloaded sanitize-filename v0.3.0
[INFO] [stderr]   Downloaded simple_xml_serialize v0.3.0
[INFO] [stderr]   Downloaded async-trait v0.1.52
[INFO] [stderr]   Downloaded rand_core v0.6.3
[INFO] [stderr]   Downloaded quote v0.6.13
[INFO] [stderr]   Downloaded os_str_bytes v6.0.0
[INFO] [stderr]   Downloaded parking_lot_core v0.9.1
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded socket2 v0.4.4
[INFO] [stderr]   Downloaded futures-executor v0.3.21
[INFO] [stderr]   Downloaded getrandom v0.2.5
[INFO] [stderr]   Downloaded clap_derive v3.1.4
[INFO] [stderr]   Downloaded pkg-config v0.3.24
[INFO] [stderr]   Downloaded smallvec v1.8.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.11
[INFO] [stderr]   Downloaded quickcheck v1.0.3
[INFO] [stderr]   Downloaded pin-project-lite v0.2.8
[INFO] [stderr]   Downloaded futures-channel v0.3.21
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] [stderr]   Downloaded miow v0.3.7
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] [stderr]   Downloaded proc-macro2 v0.4.30
[INFO] [stderr]   Downloaded termcolor v1.1.3
[INFO] [stderr]   Downloaded futures v0.3.21
[INFO] [stderr]   Downloaded parking_lot v0.12.0
[INFO] [stderr]   Downloaded indexmap v1.8.0
[INFO] [stderr]   Downloaded miniz_oxide v0.4.4
[INFO] [stderr]   Downloaded bzip2 v0.4.3
[INFO] [stderr]   Downloaded textwrap v0.15.0
[INFO] [stderr]   Downloaded serde_derive v1.0.136
[INFO] [stderr]   Downloaded cc v1.0.73
[INFO] [stderr]   Downloaded bytes v1.1.0
[INFO] [stderr]   Downloaded flate2 v1.0.22
[INFO] [stderr]   Downloaded serde v1.0.136
[INFO] [stderr]   Downloaded mio v0.8.1
[INFO] [stderr]   Downloaded itertools v0.10.3
[INFO] [stderr]   Downloaded ntapi v0.3.7
[INFO] [stderr]   Downloaded serde_json v1.0.79
[INFO] [stderr]   Downloaded petgraph v0.6.0
[INFO] [stderr]   Downloaded syn v0.15.44
[INFO] [stderr]   Downloaded futures-util v0.3.21
[INFO] [stderr]   Downloaded clap v3.1.6
[INFO] [stderr]   Downloaded syn v1.0.86
[INFO] [stderr]   Downloaded libc v0.2.119
[INFO] [stderr]   Downloaded tokio v1.17.0
[INFO] [stderr]   Downloaded bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.32.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.32.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.32.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.32.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.32.0
[INFO] [stderr]   Downloaded windows-sys v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c
[INFO] running `Command { std: "docker" "start" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", 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" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", 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" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling weblab-assignment-structure v0.2.22 (/opt/rustwide/workdir/weblab-assignment-structure)
[INFO] [stderr]    Compiling path-slash v0.1.4
[INFO] [stderr]    Compiling simple_xml_serialize v0.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling bzip2 v0.4.3
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling sanitize-filename v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]    Compiling simple_xml_serialize_macro v0.3.0
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling zip v0.5.13
[INFO] [stderr]    Compiling clap v3.1.6
[INFO] [stderr]    Compiling weblab-macros v0.2.22 (/opt/rustwide/workdir/weblab-macros)
[INFO] [stderr]    Compiling weblab v0.2.23 (/opt/rustwide/workdir/weblab)
[INFO] [stderr]    Compiling cargo-weblabtest v0.2.11 (/opt/rustwide/workdir/cargo-weblabtest)
[INFO] [stderr]    Compiling tests v0.1.0 (/opt/rustwide/workdir/tests)
[INFO] [stderr]    Compiling example-project v0.1.0 (/opt/rustwide/workdir/example-project)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 45.14s
[INFO] running `Command { std: "docker" "inspect" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", 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" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling weblab-assignment-structure v0.2.22 (/opt/rustwide/workdir/weblab-assignment-structure)
[INFO] [stderr]    Compiling weblab-macros v0.2.22 (/opt/rustwide/workdir/weblab-macros)
[INFO] [stderr]    Compiling weblab v0.2.23 (/opt/rustwide/workdir/weblab)
[INFO] [stderr]    Compiling tests v0.1.0 (/opt/rustwide/workdir/tests)
[INFO] [stderr]    Compiling example-project v0.1.0 (/opt/rustwide/workdir/example-project)
[INFO] [stderr]    Compiling cargo-weblabtest v0.2.11 (/opt/rustwide/workdir/cargo-weblabtest)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", 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" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/cargo_weblabtest-31f7cba8215d57e0)
[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]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/example_project-d940f7a9b3c02e08)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test a::assignment::test::test ... ok
[INFO] [stdout] test c::assignment::test::test ... 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]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/tests-2192ae835e95e9fd)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::no_title ... ok
[INFO] [stdout] test tests::simple_conversion ... 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]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/weblab-932cc4569c1575c4)
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/weblab_assignment_structure-3c0514238eb53a71)
[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] [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]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/weblab_macros-75c49e3d9fb47c3b)
[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 tests
[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 weblab
[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 weblab_assignment_structure
[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 weblab_macros
[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] running `Command { std: "docker" "inspect" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c", kill_on_drop: false }`
[INFO] [stdout] 4f1771105edf1724b1690451976adb1f7813a30dcc903666bed218baf57a6a4c