[INFO] fetching crate olaf2 0.0.3... [INFO] testing olaf2-0.0.3 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate olaf2 0.0.3 into /workspace/builds/worker-72/source [INFO] validating manifest of crates.io crate olaf2 0.0.3 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate olaf2 0.0.3 [INFO] finished tweaking crates.io crate olaf2 0.0.3 [INFO] tweaked toml for crates.io crate olaf2 0.0.3 written to /workspace/builds/worker-72/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest [INFO] [stderr] See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature. [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 537a06211ed0f01d6ecbe0431dfb5889c54f0646c231a9053d306bf261806421 [INFO] running `Command { std: "docker" "start" "-a" "537a06211ed0f01d6ecbe0431dfb5889c54f0646c231a9053d306bf261806421", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "537a06211ed0f01d6ecbe0431dfb5889c54f0646c231a9053d306bf261806421", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "537a06211ed0f01d6ecbe0431dfb5889c54f0646c231a9053d306bf261806421", kill_on_drop: false }` [INFO] [stdout] 537a06211ed0f01d6ecbe0431dfb5889c54f0646c231a9053d306bf261806421 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 440633a3f0c1c68b42b20ce8f0a8a7fb8d6b7cd817b8488b3ac360945eb6e261 [INFO] running `Command { std: "docker" "start" "-a" "440633a3f0c1c68b42b20ce8f0a8a7fb8d6b7cd817b8488b3ac360945eb6e261", kill_on_drop: false }` [INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest [INFO] [stderr] See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature. [INFO] [stderr] Compiling log v0.4.16 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling syn v1.0.91 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling encoding_index_tests v0.1.4 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling matches v0.1.9 [INFO] [stderr] Compiling adler v1.0.2 [INFO] [stderr] Compiling unicode-bidi v0.3.7 [INFO] [stderr] Compiling gimli v0.26.1 [INFO] [stderr] Compiling percent-encoding v1.0.1 [INFO] [stderr] Compiling rustc-demangle v0.1.21 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling stable_deref_trait v1.2.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling match_cfg v0.1.0 [INFO] [stderr] Compiling cpuid-bool v0.2.0 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling linked-hash-map v0.5.4 [INFO] [stderr] Compiling ppv-lite86 v0.2.16 [INFO] [stderr] Compiling encoding_rs v0.8.31 [INFO] [stderr] Compiling byte-tools v0.2.0 [INFO] [stderr] Compiling arrayref v0.3.6 [INFO] [stderr] Compiling dtoa v0.4.8 [INFO] [stderr] Compiling v_htmlescape v0.4.5 [INFO] [stderr] Compiling curl v0.4.43 [INFO] [stderr] Compiling sha1_smol v1.0.0 [INFO] [stderr] Compiling fake-simd v0.1.2 [INFO] [stderr] Compiling safemem v0.3.3 [INFO] [stderr] Compiling data-encoding v2.3.2 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling pathdiff v0.2.1 [INFO] [stderr] Compiling language-tags v0.2.2 [INFO] [stderr] Compiling termcolor v1.1.3 [INFO] [stderr] Compiling canonical-path v0.1.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling tokio-sync v0.1.8 [INFO] [stderr] Compiling backtrace v0.3.64 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling libz-sys v1.1.5 [INFO] [stderr] Compiling miniz-sys v0.1.12 [INFO] [stderr] Compiling curl-sys v0.4.53+curl-7.82.0 [INFO] [stderr] Compiling brotli-sys v0.3.2 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling clear_on_drop v0.2.4 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Compiling base64 v0.10.1 [INFO] [stderr] Compiling tower-service v0.1.0 [INFO] [stderr] Compiling try_from v0.3.2 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling socket2 v0.3.19 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling getrandom v0.2.6 [INFO] [stderr] Compiling generic-array v0.9.1 [INFO] [stderr] Compiling dirs v1.0.5 [INFO] [stderr] Compiling socket2 v0.4.4 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling isatty v0.1.9 [INFO] [stderr] Compiling cipher v0.2.5 [INFO] [stderr] Compiling universal-hash v0.4.1 [INFO] [stderr] Compiling aead v0.3.2 [INFO] [stderr] Compiling hkdf v0.10.0 [INFO] [stderr] Compiling open v1.7.1 [INFO] [stderr] Compiling tinyvec v1.5.1 [INFO] [stderr] Compiling encoding-index-simpchinese v1.20141219.5 [INFO] [stderr] Compiling encoding-index-tradchinese v1.20141219.5 [INFO] [stderr] Compiling encoding-index-korean v1.20141219.5 [INFO] [stderr] Compiling encoding-index-japanese v1.20141219.5 [INFO] [stderr] Compiling encoding-index-singlebyte v1.20141219.5 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling form_urlencoded v1.0.1 [INFO] [stderr] Compiling owning_ref v0.4.1 [INFO] [stderr] Compiling base64 v0.9.3 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling lock_api v0.3.4 [INFO] [stderr] Compiling lru-cache v0.1.2 [INFO] [stderr] Compiling miniz_oxide v0.5.1 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling block-buffer v0.3.3 [INFO] [stderr] Compiling term v0.5.2 [INFO] [stderr] Compiling futures-cpupool v0.1.8 [INFO] [stderr] error: could not compile `unicode-bidi` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name unicode_bidi --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unicode-bidi-0.3.7/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=a69ffc9ceeb64fbb -C extra-filename=-a69ffc9ceeb64fbb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `termcolor` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name termcolor --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/termcolor-1.1.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=32b50f642d1e75a8 -C extra-filename=-32b50f642d1e75a8 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `num_cpus` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name num_cpus /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/num_cpus-1.13.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=a2542e663d4724f3 -C extra-filename=-a2542e663d4724f3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-c04c3f34c6352231.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `gimli` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name gimli --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gimli-0.26.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="read"' --cfg 'feature="read-core"' -C metadata=8acf6516e7235d17 -C extra-filename=-8acf6516e7235d17 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `data-encoding` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name data_encoding --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/data-encoding-2.3.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=db8c7da9cef73501 -C extra-filename=-db8c7da9cef73501 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `language-tags` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name language_tags /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/language-tags-0.2.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=66706a840c6b3f9e -C extra-filename=-66706a840c6b3f9e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `rand_jitter` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name rand_jitter /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand_jitter-0.1.4/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="std"' -C metadata=a6ffbd6e57632e30 -C extra-filename=-a6ffbd6e57632e30 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-8951c9ba3b1758eb.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `semver-parser` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name semver_parser /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/semver-parser-0.7.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=03acc8acbf834953 -C extra-filename=-03acc8acbf834953 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `tokio-sync` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name tokio_sync /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-sync-0.1.8/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=72fdd4ebc14b4b69 -C extra-filename=-72fdd4ebc14b4b69 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern fnv=/opt/rustwide/target/debug/deps/libfnv-bb690c336855f248.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-0f39203b7bbc7621.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `rand` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name rand /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.5.6/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="cloudabi"' --cfg 'feature="default"' --cfg 'feature="fuchsia-cprng"' --cfg 'feature="libc"' --cfg 'feature="std"' --cfg 'feature="winapi"' -C metadata=495c0c9162aa16a1 -C extra-filename=-495c0c9162aa16a1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-c04c3f34c6352231.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-2be1dd7fb302b8f4.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `crossbeam-utils` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name crossbeam_utils /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-utils-0.6.6/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="lazy_static"' --cfg 'feature="std"' -C metadata=1eb8a1cfca42adc4 -C extra-filename=-1eb8a1cfca42adc4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-b22544e46cbb7baa.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-86422d76b8bd90ed.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `encoding-index-japanese` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name encoding_index_japanese /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/encoding-index-japanese-1.20141219.5/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=a01cf758b2321964 -C extra-filename=-a01cf758b2321964 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern encoding_index_tests=/opt/rustwide/target/debug/deps/libencoding_index_tests-c673326c7cd3b9ff.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] error: could not compile `tinyvec` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name tinyvec --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tinyvec-1.5.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="tinyvec_macros"' -C metadata=c348951c3414c332 -C extra-filename=-c348951c3414c332 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern tinyvec_macros=/opt/rustwide/target/debug/deps/libtinyvec_macros-c8728763a1cfbcab.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] running `Command { std: "docker" "inspect" "440633a3f0c1c68b42b20ce8f0a8a7fb8d6b7cd817b8488b3ac360945eb6e261", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "440633a3f0c1c68b42b20ce8f0a8a7fb8d6b7cd817b8488b3ac360945eb6e261", kill_on_drop: false }` [INFO] [stdout] 440633a3f0c1c68b42b20ce8f0a8a7fb8d6b7cd817b8488b3ac360945eb6e261