[INFO] cloning repository https://github.com/greged93/relaynx
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/greged93/relaynx" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreged93%2Frelaynx", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreged93%2Frelaynx'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25a2c27cb9425e7e63a875f390979cba113ca9b9
[INFO] checking greged93/relaynx against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for 2025-12-16-next-solver-global
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreged93%2Frelaynx" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/greged93/relaynx
[INFO] finished tweaking git repo https://github.com/greged93/relaynx
[INFO] tweaked toml for git repo https://github.com/greged93/relaynx written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/greged93/relaynx on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/greged93/relaynx 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" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de7fd91aac87fc8a6a0f9f93075f83b62481a195200b491b4b3714b8bcee0fd1
[INFO] running `Command { std: "docker" "start" "-a" "de7fd91aac87fc8a6a0f9f93075f83b62481a195200b491b4b3714b8bcee0fd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7fd91aac87fc8a6a0f9f93075f83b62481a195200b491b4b3714b8bcee0fd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7fd91aac87fc8a6a0f9f93075f83b62481a195200b491b4b3714b8bcee0fd1", kill_on_drop: false }`
[INFO] [stdout] de7fd91aac87fc8a6a0f9f93075f83b62481a195200b491b4b3714b8bcee0fd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ad21a098518a43c9500e6d31516c08fc1cde41020c1c2d523ae27c543af1a40
[INFO] running `Command { std: "docker" "start" "-a" "7ad21a098518a43c9500e6d31516c08fc1cde41020c1c2d523ae27c543af1a40", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.160
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cc v1.1.30
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling cpufeatures v0.2.14
[INFO] [stderr]    Compiling serde_json_pythonic v0.1.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking bytes v1.7.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]     Checking hashbrown v0.15.0
[INFO] [stderr]    Compiling lambdaworks-math v0.10.0
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling base64 v0.21.7
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling miniz_oxide v0.8.0
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking indexmap v2.6.0
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]     Checking tinyvec v1.8.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling flate2 v1.0.34
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]    Compiling tokio v1.40.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]    Compiling rlp v0.5.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]     Checking unicode-bidi v0.3.17
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
[INFO] [stderr]     Checking lambdaworks-crypto v0.10.0
[INFO] [stderr]     Checking salsa20 v0.10.2
[INFO] [stderr]    Compiling encoding_rs v0.8.34
[INFO] [stderr]    Compiling ipnet v2.10.1
[INFO] [stderr]    Compiling sync_wrapper v0.1.2
[INFO] [stderr]    Compiling webpki-roots v0.25.4
[INFO] [stderr]     Checking scrypt v0.10.0
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]    Compiling prettyplease v0.2.22
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling rustc_version_runtime v0.3.0
[INFO] [stderr]     Checking clap_builder v4.5.20
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking unicode-properties v0.1.3
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking stringprep v0.1.5
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking regex-automata v0.4.8
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking dotenvy v0.15.7
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]    Compiling tokio-util v0.7.12
[INFO] [stderr]    Compiling darling_core v0.20.10
[INFO] [stderr]     Checking regex v1.11.0
[INFO] [stderr]    Compiling h2 v0.3.26
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]    Compiling async-trait v0.1.83
[INFO] [stderr]    Compiling auto_impl v1.2.0
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling mongodb-internal-macros v3.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling tokio-rustls v0.24.1
[INFO] [stderr]    Compiling darling v0.20.10
[INFO] [stderr]     Checking clap v4.5.20
[INFO] [stderr]    Compiling serde_with_macros v3.11.0
[INFO] [stderr]     Checking clap_complete v4.5.33
[INFO] [stderr]    Compiling unzip-n v0.1.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling typed-builder v0.10.0
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]    Compiling cainome-cairo-serde-derive v0.1.0 (https://github.com/cartridge-gg/cainome?tag=v0.4.3#188d3d59)
[INFO] [stderr]    Compiling hyper v0.14.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]    Compiling hyper-rustls v0.24.2
[INFO] [stderr]     Checking starknet-types-core v0.1.7
[INFO] [stderr]     Checking serde_with v3.11.0
[INFO] [stderr]     Checking impl-serde v0.4.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking serde_bytes v0.11.15
[INFO] [stderr]     Checking ethbloom v0.13.0
[INFO] [stderr]     Checking primitive-types v0.12.2
[INFO] [stderr]     Checking starknet-curve v0.5.1
[INFO] [stderr]     Checking starknet-crypto v0.7.2
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]     Checking uuid v1.11.0
[INFO] [stderr]    Compiling eth-keystore v0.5.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking bson v2.13.0
[INFO] [stderr]    Compiling ethereum-types v0.14.1
[INFO] [stderr]     Checking starknet-core v0.12.0
[INFO] [stderr]     Checking mongodb v3.1.0
[INFO] [stderr]     Checking starknet-providers v0.12.0
[INFO] [stderr]     Checking starknet-signers v0.10.0
[INFO] [stderr] error: could not compile `mongodb` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f/bin/rustc --crate-name mongodb --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mongodb-3.1.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --warn=unexpected_cfgs --check-cfg 'cfg(mongodb_internal_tracking_arc)' --cfg 'feature="compat-3-0-0"' --cfg 'feature="rustls-tls"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("aws-auth", "azure-kms", "azure-oidc", "compat-3-0-0", "default", "dns-resolver", "gcp-kms", "gcp-oidc", "in-use-encryption-unstable", "openssl-tls", "rustls-tls", "snappy-compression", "sync", "tracing-unstable", "zlib-compression", "zstd-compression"))' -C metadata=0260c0393de000bc -C extra-filename=-3beaedbbc0bbf399 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-929c84ff21051433.so --extern base64=/opt/rustwide/target/debug/deps/libbase64-751017f340c066d6.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-6dcfbc6bad33d8b2.rmeta --extern bson=/opt/rustwide/target/debug/deps/libbson-ff28be0ed0f6c74a.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-cd8b9c60cad51a11.rmeta --extern derivative=/opt/rustwide/target/debug/deps/libderivative-5f0cbeec7a4955d9.so --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-4b63941eb5ce243b.so --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-756e876442dee363.rmeta --extern futures_executor=/opt/rustwide/target/debug/deps/libfutures_executor-0b8d5e9c1fbdeed2.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-8d88089869a627e9.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-ad23c4bd6f241bcd.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-4852862d92867e36.rmeta --extern hmac=/opt/rustwide/target/debug/deps/libhmac-4380c220cfbc37b3.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-f05cfd4583e6b514.rmeta --extern mongodb_internal_macros=/opt/rustwide/target/debug/deps/libmongodb_internal_macros-8530d0ebfed60d61.so --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-154929b6ac9493b9.rmeta --extern pbkdf2=/opt/rustwide/target/debug/deps/libpbkdf2-b39d833994186f9e.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-70e4695576ffb191.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-0d900a5e70e75846.rmeta --extern rustc_version_runtime=/opt/rustwide/target/debug/deps/librustc_version_runtime-cc4601f76d984870.rmeta --extern rustls=/opt/rustwide/target/debug/deps/librustls-e0ec398a3a067cb6.rmeta --extern rustls_pemfile=/opt/rustwide/target/debug/deps/librustls_pemfile-3f7a29d9de4ee2cb.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9cdc036d195982e2.rmeta --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-4ef5927cead7ca22.rmeta --extern serde_with=/opt/rustwide/target/debug/deps/libserde_with-c3b51c89524f8ee6.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-cab21c4023dd8b1d.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-55e3ca0c14eee3ae.rmeta --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-a162baacbd6fa73d.rmeta --extern stringprep=/opt/rustwide/target/debug/deps/libstringprep-134d5b3bd68ad0f3.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-a1f0dce47f9b6856.rmeta --extern take_mut=/opt/rustwide/target/debug/deps/libtake_mut-0167925e006b9ec1.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-68f29aed0b724c69.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-3b40add8625df1f1.rmeta --extern tokio_rustls=/opt/rustwide/target/debug/deps/libtokio_rustls-8f105c59c9634b86.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-d8ed5d27bc462011.rmeta --extern typed_builder=/opt/rustwide/target/debug/deps/libtyped_builder-61f67c08fe3acf42.so --extern uuid=/opt/rustwide/target/debug/deps/libuuid-f98f532191676b68.rmeta --extern webpki_roots=/opt/rustwide/target/debug/deps/libwebpki_roots-5f0d31615ea98f5b.rmeta --cap-lints allow --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/ring-ae1396df379b3b71/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7ad21a098518a43c9500e6d31516c08fc1cde41020c1c2d523ae27c543af1a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad21a098518a43c9500e6d31516c08fc1cde41020c1c2d523ae27c543af1a40", kill_on_drop: false }`
[INFO] [stdout] 7ad21a098518a43c9500e6d31516c08fc1cde41020c1c2d523ae27c543af1a40