Nov 16 14:41:15.163 INFO testing safsom/alif against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982 Nov 16 14:41:15.163 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Nov 16 14:41:15.299 INFO [stdout] 1ae029901afbf59a2da983fa798cd1484bc8c19dbb34a9101b1159374451795a Nov 16 14:41:15.301 INFO running `"docker" "start" "-a" "1ae029901afbf59a2da983fa798cd1484bc8c19dbb34a9101b1159374451795a"` Nov 16 14:41:15.752 INFO [stderr] usermod: no changes Nov 16 14:41:15.783 INFO [stderr] Compiling ac v0.1.0 (/source) Nov 16 14:41:16.052 INFO [stderr] warning: unused variable: `b` Nov 16 14:41:16.052 INFO [stderr] --> src/lexer.rs:229:46 Nov 16 14:41:16.052 INFO [stderr] | Nov 16 14:41:16.052 INFO [stderr] 229 | TokenType::Identifier(ref s, ref b) => println!("identifier {} on line {} at char {}", s, token.token_line, token.token_pos), Nov 16 14:41:16.052 INFO [stderr] | ^ help: consider using `_b` instead Nov 16 14:41:16.052 INFO [stderr] | Nov 16 14:41:16.052 INFO [stderr] = note: #[warn(unused_variables)] on by default Nov 16 14:41:16.052 INFO [stderr] Nov 16 14:41:16.052 INFO [stderr] warning: unused variable: `s` Nov 16 14:41:16.052 INFO [stderr] --> src/parser.rs:69:43 Nov 16 14:41:16.052 INFO [stderr] | Nov 16 14:41:16.052 INFO [stderr] 69 | TokenType::String(ref s) => panic!("error: type mismatch: cannot operate on integers and strings"), Nov 16 14:41:16.052 INFO [stderr] | ^ help: consider using `_s` instead Nov 16 14:41:16.052 INFO [stderr] Nov 16 14:41:16.087 INFO [stderr] warning: variable does not need to be mutable Nov 16 14:41:16.087 INFO [stderr] --> src/parser.rs:62:9 Nov 16 14:41:16.087 INFO [stderr] | Nov 16 14:41:16.087 INFO [stderr] 62 | let mut i = 0; Nov 16 14:41:16.087 INFO [stderr] | ----^ Nov 16 14:41:16.087 INFO [stderr] | | Nov 16 14:41:16.087 INFO [stderr] | help: remove this `mut` Nov 16 14:41:16.087 INFO [stderr] | Nov 16 14:41:16.087 INFO [stderr] = note: #[warn(unused_mut)] on by default Nov 16 14:41:16.087 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Division` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:8:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 8 | Division, Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] = note: #[warn(dead_code)] on by default Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `LeftShift` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:12:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 12 | LeftShift, Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `RightShift` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:13:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 13 | RightShift, Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `StringLiteral` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:28:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 28 | StringLiteral(String), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Character` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:29:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 29 | Character(char), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Const` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:30:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 30 | Const(String, Box), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Unary` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:31:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 31 | Unary(Operators, Box), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Call` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:33:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 33 | Call(String, Vec), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Function` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:34:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 34 | Function(String, Vec, Vec), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `If` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:35:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 35 | If(Box, Vec), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: variant is never constructed: `Else` Nov 16 14:41:16.088 INFO [stderr] --> src/parser.rs:36:5 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 36 | Else(Vec), Nov 16 14:41:16.088 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.088 INFO [stderr] Nov 16 14:41:16.088 INFO [stderr] warning: constant `keywords` should have an upper case name such as `KEYWORDS` Nov 16 14:41:16.088 INFO [stderr] --> src/lexer.rs:1:1 Nov 16 14:41:16.088 INFO [stderr] | Nov 16 14:41:16.088 INFO [stderr] 1 | const keywords: [&str; 10] = ["const", "record", "char", "string", "int", "bool", "if", "else", "match", "enum"]; Nov 16 14:41:16.089 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:16.089 INFO [stderr] | Nov 16 14:41:16.089 INFO [stderr] = note: #[warn(non_upper_case_globals)] on by default Nov 16 14:41:16.089 INFO [stderr] Nov 16 14:41:16.509 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.74s Nov 16 14:41:16.511 INFO [stderr] su: No module specific data is present Nov 16 14:41:16.852 INFO running `"docker" "inspect" "1ae029901afbf59a2da983fa798cd1484bc8c19dbb34a9101b1159374451795a"` Nov 16 14:41:17.049 INFO running `"docker" "rm" "-f" "1ae029901afbf59a2da983fa798cd1484bc8c19dbb34a9101b1159374451795a"` Nov 16 14:41:17.288 INFO [stdout] 1ae029901afbf59a2da983fa798cd1484bc8c19dbb34a9101b1159374451795a Nov 16 14:41:17.291 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Nov 16 14:41:17.610 INFO [stdout] 219106586f961135ea080dc02e3886df05a7f31e7ec6f7cc73d836b419aaed18 Nov 16 14:41:17.612 INFO running `"docker" "start" "-a" "219106586f961135ea080dc02e3886df05a7f31e7ec6f7cc73d836b419aaed18"` Nov 16 14:41:18.037 INFO [stderr] usermod: no changes Nov 16 14:41:18.070 INFO [stderr] Compiling ac v0.1.0 (/source) Nov 16 14:41:18.483 INFO [stderr] warning: unused variable: `b` Nov 16 14:41:18.483 INFO [stderr] --> src/lexer.rs:229:46 Nov 16 14:41:18.483 INFO [stderr] | Nov 16 14:41:18.483 INFO [stderr] 229 | TokenType::Identifier(ref s, ref b) => println!("identifier {} on line {} at char {}", s, token.token_line, token.token_pos), Nov 16 14:41:18.483 INFO [stderr] | ^ help: consider using `_b` instead Nov 16 14:41:18.483 INFO [stderr] | Nov 16 14:41:18.483 INFO [stderr] = note: #[warn(unused_variables)] on by default Nov 16 14:41:18.483 INFO [stderr] Nov 16 14:41:18.483 INFO [stderr] warning: unused variable: `s` Nov 16 14:41:18.483 INFO [stderr] --> src/parser.rs:69:43 Nov 16 14:41:18.483 INFO [stderr] | Nov 16 14:41:18.483 INFO [stderr] 69 | TokenType::String(ref s) => panic!("error: type mismatch: cannot operate on integers and strings"), Nov 16 14:41:18.483 INFO [stderr] | ^ help: consider using `_s` instead Nov 16 14:41:18.483 INFO [stderr] Nov 16 14:41:18.523 INFO [stderr] warning: variable does not need to be mutable Nov 16 14:41:18.523 INFO [stderr] --> src/parser.rs:62:9 Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] 62 | let mut i = 0; Nov 16 14:41:18.523 INFO [stderr] | ----^ Nov 16 14:41:18.523 INFO [stderr] | | Nov 16 14:41:18.523 INFO [stderr] | help: remove this `mut` Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] = note: #[warn(unused_mut)] on by default Nov 16 14:41:18.523 INFO [stderr] Nov 16 14:41:18.523 INFO [stderr] warning: variant is never constructed: `Division` Nov 16 14:41:18.523 INFO [stderr] --> src/parser.rs:8:5 Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] 8 | Division, Nov 16 14:41:18.523 INFO [stderr] | ^^^^^^^^ Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] = note: #[warn(dead_code)] on by default Nov 16 14:41:18.523 INFO [stderr] Nov 16 14:41:18.523 INFO [stderr] warning: variant is never constructed: `LeftShift` Nov 16 14:41:18.523 INFO [stderr] --> src/parser.rs:12:5 Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] 12 | LeftShift, Nov 16 14:41:18.523 INFO [stderr] | ^^^^^^^^^ Nov 16 14:41:18.523 INFO [stderr] Nov 16 14:41:18.523 INFO [stderr] warning: variant is never constructed: `RightShift` Nov 16 14:41:18.523 INFO [stderr] --> src/parser.rs:13:5 Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] 13 | RightShift, Nov 16 14:41:18.523 INFO [stderr] | ^^^^^^^^^^ Nov 16 14:41:18.523 INFO [stderr] Nov 16 14:41:18.523 INFO [stderr] warning: variant is never constructed: `StringLiteral` Nov 16 14:41:18.523 INFO [stderr] --> src/parser.rs:28:5 Nov 16 14:41:18.523 INFO [stderr] | Nov 16 14:41:18.523 INFO [stderr] 28 | StringLiteral(String), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `Character` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:29:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 29 | Character(char), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `Const` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:30:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 30 | Const(String, Box), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `Unary` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:31:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 31 | Unary(Operators, Box), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `Call` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:33:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 33 | Call(String, Vec), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `Function` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:34:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 34 | Function(String, Vec, Vec), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `If` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:35:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 35 | If(Box, Vec), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: variant is never constructed: `Else` Nov 16 14:41:18.524 INFO [stderr] --> src/parser.rs:36:5 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 36 | Else(Vec), Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.524 INFO [stderr] warning: constant `keywords` should have an upper case name such as `KEYWORDS` Nov 16 14:41:18.524 INFO [stderr] --> src/lexer.rs:1:1 Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] 1 | const keywords: [&str; 10] = ["const", "record", "char", "string", "int", "bool", "if", "else", "match", "enum"]; Nov 16 14:41:18.524 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 16 14:41:18.524 INFO [stderr] | Nov 16 14:41:18.524 INFO [stderr] = note: #[warn(non_upper_case_globals)] on by default Nov 16 14:41:18.524 INFO [stderr] Nov 16 14:41:18.814 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.76s Nov 16 14:41:18.815 INFO [stderr] su: No module specific data is present Nov 16 14:41:19.133 INFO running `"docker" "inspect" "219106586f961135ea080dc02e3886df05a7f31e7ec6f7cc73d836b419aaed18"` Nov 16 14:41:19.373 INFO running `"docker" "rm" "-f" "219106586f961135ea080dc02e3886df05a7f31e7ec6f7cc73d836b419aaed18"` Nov 16 14:41:19.651 INFO [stdout] 219106586f961135ea080dc02e3886df05a7f31e7ec6f7cc73d836b419aaed18 Nov 16 14:41:19.656 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Nov 16 14:41:19.904 INFO [stdout] fbdb5fb8471ee858b0ddf832ba3e51f8a9db6b03c4d8483dfd1cd0c6f0b7a548 Nov 16 14:41:19.910 INFO running `"docker" "start" "-a" "fbdb5fb8471ee858b0ddf832ba3e51f8a9db6b03c4d8483dfd1cd0c6f0b7a548"` Nov 16 14:41:20.605 INFO [stderr] usermod: no changes Nov 16 14:41:20.643 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s Nov 16 14:41:20.643 INFO [stderr] Running /target/debug/deps/ac-a10953affa402897 Nov 16 14:41:20.647 INFO [stdout] Nov 16 14:41:20.647 INFO [stdout] running 0 tests Nov 16 14:41:20.647 INFO [stdout] Nov 16 14:41:20.647 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Nov 16 14:41:20.647 INFO [stdout] Nov 16 14:41:20.650 INFO [stderr] su: No module specific data is present Nov 16 14:41:20.969 INFO running `"docker" "inspect" "fbdb5fb8471ee858b0ddf832ba3e51f8a9db6b03c4d8483dfd1cd0c6f0b7a548"` Nov 16 14:41:21.069 INFO running `"docker" "rm" "-f" "fbdb5fb8471ee858b0ddf832ba3e51f8a9db6b03c4d8483dfd1cd0c6f0b7a548"` Nov 16 14:41:21.274 INFO [stdout] fbdb5fb8471ee858b0ddf832ba3e51f8a9db6b03c4d8483dfd1cd0c6f0b7a548