Dec 06 06:56:14.095 INFO testing andreaseg/rcalc against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 06:56:14.095 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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"`
Dec 06 06:56:14.508 INFO [stdout] 2aafe160181f1df15555c65e4c1da8302969d5c3d51d3532eacbee955a34ea07
Dec 06 06:56:14.510 INFO running `"docker" "start" "-a" "2aafe160181f1df15555c65e4c1da8302969d5c3d51d3532eacbee955a34ea07"`
Dec 06 06:56:16.287 INFO [stderr] usermod: no changes
Dec 06 06:56:16.401 INFO [stderr]    Compiling libc v0.2.41
Dec 06 06:56:17.960 INFO [stderr]    Compiling memchr v2.0.1
Dec 06 06:56:18.660 INFO [stderr]    Compiling aho-corasick v0.6.4
Dec 06 06:56:19.752 INFO [stderr]    Compiling regex v0.2.11
Dec 06 06:56:28.424 INFO [stderr]    Compiling rcalc v0.1.0 (/source)
Dec 06 06:56:31.136 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.79s
Dec 06 06:56:31.136 INFO [stderr] su: No module specific data is present
Dec 06 06:56:31.986 INFO running `"docker" "inspect" "2aafe160181f1df15555c65e4c1da8302969d5c3d51d3532eacbee955a34ea07"`
Dec 06 06:56:32.284 INFO running `"docker" "rm" "-f" "2aafe160181f1df15555c65e4c1da8302969d5c3d51d3532eacbee955a34ea07"`
Dec 06 06:56:32.588 INFO [stdout] 2aafe160181f1df15555c65e4c1da8302969d5c3d51d3532eacbee955a34ea07
Dec 06 06:56:32.592 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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"`
Dec 06 06:56:33.302 INFO [stdout] bc47616b759690afbd378703deeeb7e5b3b6bb2b5859d0b19571a77a2b48b43e
Dec 06 06:56:33.308 INFO running `"docker" "start" "-a" "bc47616b759690afbd378703deeeb7e5b3b6bb2b5859d0b19571a77a2b48b43e"`
Dec 06 06:56:34.929 INFO [stderr] usermod: no changes
Dec 06 06:56:35.012 INFO [stderr]    Compiling rcalc v0.1.0 (/source)
Dec 06 06:56:36.104 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.104 INFO [stderr]    --> src/parser.rs:221:39
Dec 06 06:56:36.104 INFO [stderr]     |
Dec 06 06:56:36.104 INFO [stderr] 221 |             parse(::scanner::tokenize("1 + 2".to_string())),
Dec 06 06:56:36.104 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.104 INFO [stderr]     |                                       |
Dec 06 06:56:36.104 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.104 INFO [stderr]     |                                       help: consider borrowing here: `&"1 + 2".to_string()`
Dec 06 06:56:36.104 INFO [stderr]     |
Dec 06 06:56:36.104 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.104 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.104 INFO [stderr] 
Dec 06 06:56:36.104 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.105 INFO [stderr]    --> src/parser.rs:229:39
Dec 06 06:56:36.105 INFO [stderr]     |
Dec 06 06:56:36.105 INFO [stderr] 229 |             parse(::scanner::tokenize("1 * 2".to_string())),
Dec 06 06:56:36.105 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.105 INFO [stderr]     |                                       |
Dec 06 06:56:36.105 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.105 INFO [stderr]     |                                       help: consider borrowing here: `&"1 * 2".to_string()`
Dec 06 06:56:36.105 INFO [stderr]     |
Dec 06 06:56:36.105 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.105 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.105 INFO [stderr] 
Dec 06 06:56:36.105 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.105 INFO [stderr]    --> src/parser.rs:237:39
Dec 06 06:56:36.105 INFO [stderr]     |
Dec 06 06:56:36.105 INFO [stderr] 237 |             parse(::scanner::tokenize("1 / 2".to_string())),
Dec 06 06:56:36.105 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.105 INFO [stderr]     |                                       |
Dec 06 06:56:36.105 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.105 INFO [stderr]     |                                       help: consider borrowing here: `&"1 / 2".to_string()`
Dec 06 06:56:36.105 INFO [stderr]     |
Dec 06 06:56:36.105 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.105 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.105 INFO [stderr] 
Dec 06 06:56:36.105 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.105 INFO [stderr]    --> src/parser.rs:245:39
Dec 06 06:56:36.105 INFO [stderr]     |
Dec 06 06:56:36.105 INFO [stderr] 245 |             parse(::scanner::tokenize("1 - 2".to_string())),
Dec 06 06:56:36.105 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.105 INFO [stderr]     |                                       |
Dec 06 06:56:36.105 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.105 INFO [stderr]     |                                       help: consider borrowing here: `&"1 - 2".to_string()`
Dec 06 06:56:36.105 INFO [stderr]     |
Dec 06 06:56:36.105 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.105 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.105 INFO [stderr] 
Dec 06 06:56:36.108 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.108 INFO [stderr]    --> src/parser.rs:253:39
Dec 06 06:56:36.108 INFO [stderr]     |
Dec 06 06:56:36.108 INFO [stderr] 253 |             parse(::scanner::tokenize("1 ^ 2".to_string())),
Dec 06 06:56:36.108 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.108 INFO [stderr]     |                                       |
Dec 06 06:56:36.108 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.108 INFO [stderr]     |                                       help: consider borrowing here: `&"1 ^ 2".to_string()`
Dec 06 06:56:36.108 INFO [stderr]     |
Dec 06 06:56:36.108 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.108 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.108 INFO [stderr] 
Dec 06 06:56:36.108 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.108 INFO [stderr]    --> src/parser.rs:265:39
Dec 06 06:56:36.108 INFO [stderr]     |
Dec 06 06:56:36.108 INFO [stderr] 265 |             parse(::scanner::tokenize("(1)".to_string())),
Dec 06 06:56:36.108 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.108 INFO [stderr]     |                                       |
Dec 06 06:56:36.108 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.108 INFO [stderr]     |                                       help: consider borrowing here: `&"(1)".to_string()`
Dec 06 06:56:36.108 INFO [stderr]     |
Dec 06 06:56:36.109 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.109 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.109 INFO [stderr] 
Dec 06 06:56:36.109 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.109 INFO [stderr]    --> src/parser.rs:273:39
Dec 06 06:56:36.109 INFO [stderr]     |
Dec 06 06:56:36.109 INFO [stderr] 273 |             parse(::scanner::tokenize("(1) + (2)".to_string())),
Dec 06 06:56:36.109 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.109 INFO [stderr]     |                                       |
Dec 06 06:56:36.109 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.109 INFO [stderr]     |                                       help: consider borrowing here: `&"(1) + (2)".to_string()`
Dec 06 06:56:36.109 INFO [stderr]     |
Dec 06 06:56:36.109 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.109 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.109 INFO [stderr] 
Dec 06 06:56:36.112 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.112 INFO [stderr]    --> src/parser.rs:285:39
Dec 06 06:56:36.112 INFO [stderr]     |
Dec 06 06:56:36.112 INFO [stderr] 285 |             parse(::scanner::tokenize("1 + 2 * 3".to_string())),
Dec 06 06:56:36.112 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.112 INFO [stderr]     |                                       |
Dec 06 06:56:36.112 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.112 INFO [stderr]     |                                       help: consider borrowing here: `&"1 + 2 * 3".to_string()`
Dec 06 06:56:36.112 INFO [stderr]     |
Dec 06 06:56:36.112 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.112 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.112 INFO [stderr] 
Dec 06 06:56:36.112 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.112 INFO [stderr]    --> src/parser.rs:298:39
Dec 06 06:56:36.112 INFO [stderr]     |
Dec 06 06:56:36.112 INFO [stderr] 298 |             parse(::scanner::tokenize("1 * 2 + 3".to_string())),
Dec 06 06:56:36.112 INFO [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.112 INFO [stderr]     |                                       |
Dec 06 06:56:36.112 INFO [stderr]     |                                       expected &str, found struct `std::string::String`
Dec 06 06:56:36.112 INFO [stderr]     |                                       help: consider borrowing here: `&"1 * 2 + 3".to_string()`
Dec 06 06:56:36.112 INFO [stderr]     |
Dec 06 06:56:36.112 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.112 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.112 INFO [stderr] 
Dec 06 06:56:36.127 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.127 INFO [stderr]   --> src/scanner.rs:77:39
Dec 06 06:56:36.127 INFO [stderr]    |
Dec 06 06:56:36.127 INFO [stderr] 77 |                   let tokens = tokenize($match_values.to_string());
Dec 06 06:56:36.127 INFO [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.127 INFO [stderr]    |                                         |
Dec 06 06:56:36.127 INFO [stderr]    |                                         expected &str, found struct `std::string::String`
Dec 06 06:56:36.127 INFO [stderr]    |                                         help: consider borrowing here: `&$match_values.to_string()`
Dec 06 06:56:36.127 INFO [stderr] ...
Dec 06 06:56:36.127 INFO [stderr] 93 | /     test_tokenizer!(
Dec 06 06:56:36.127 INFO [stderr] 94 | |         number,
Dec 06 06:56:36.127 INFO [stderr] 95 | |         "2",
Dec 06 06:56:36.127 INFO [stderr] 96 | |         Token::Number(_),
Dec 06 06:56:36.127 INFO [stderr] 97 | |         "Tokenizer does not recognize numbers"
Dec 06 06:56:36.127 INFO [stderr] 98 | |     );
Dec 06 06:56:36.127 INFO [stderr]    | |______- in this macro invocation
Dec 06 06:56:36.127 INFO [stderr]    |
Dec 06 06:56:36.127 INFO [stderr]    = note: expected type `&str`
Dec 06 06:56:36.127 INFO [stderr]               found type `std::string::String`
Dec 06 06:56:36.127 INFO [stderr] 
Dec 06 06:56:36.129 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.129 INFO [stderr]    --> src/scanner.rs:77:39
Dec 06 06:56:36.129 INFO [stderr]     |
Dec 06 06:56:36.129 INFO [stderr] 77  |                   let tokens = tokenize($match_values.to_string());
Dec 06 06:56:36.129 INFO [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.129 INFO [stderr]     |                                         |
Dec 06 06:56:36.129 INFO [stderr]     |                                         expected &str, found struct `std::string::String`
Dec 06 06:56:36.129 INFO [stderr]     |                                         help: consider borrowing here: `&$match_values.to_string()`
Dec 06 06:56:36.129 INFO [stderr] ...
Dec 06 06:56:36.129 INFO [stderr] 99  | /     test_tokenizer!(
Dec 06 06:56:36.129 INFO [stderr] 100 | |         lpar,
Dec 06 06:56:36.129 INFO [stderr] 101 | |         "(",
Dec 06 06:56:36.129 INFO [stderr] 102 | |         Token::LeftPar,
Dec 06 06:56:36.129 INFO [stderr] 103 | |         "Tokenizer does not recognize '('"
Dec 06 06:56:36.129 INFO [stderr] 104 | |     );
Dec 06 06:56:36.129 INFO [stderr]     | |______- in this macro invocation
Dec 06 06:56:36.129 INFO [stderr]     |
Dec 06 06:56:36.129 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.129 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.129 INFO [stderr] 
Dec 06 06:56:36.132 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.132 INFO [stderr]    --> src/scanner.rs:77:39
Dec 06 06:56:36.132 INFO [stderr]     |
Dec 06 06:56:36.132 INFO [stderr] 77  |                   let tokens = tokenize($match_values.to_string());
Dec 06 06:56:36.132 INFO [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.132 INFO [stderr]     |                                         |
Dec 06 06:56:36.132 INFO [stderr]     |                                         expected &str, found struct `std::string::String`
Dec 06 06:56:36.132 INFO [stderr]     |                                         help: consider borrowing here: `&$match_values.to_string()`
Dec 06 06:56:36.132 INFO [stderr] ...
Dec 06 06:56:36.132 INFO [stderr] 105 | /     test_tokenizer!(
Dec 06 06:56:36.132 INFO [stderr] 106 | |         rpar,
Dec 06 06:56:36.132 INFO [stderr] 107 | |         ")",
Dec 06 06:56:36.132 INFO [stderr] 108 | |         Token::RightPar,
Dec 06 06:56:36.132 INFO [stderr] 109 | |         "Tokenizer does not recognize ')'"
Dec 06 06:56:36.132 INFO [stderr] 110 | |     );
Dec 06 06:56:36.132 INFO [stderr]     | |______- in this macro invocation
Dec 06 06:56:36.132 INFO [stderr]     |
Dec 06 06:56:36.132 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.132 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.132 INFO [stderr] 
Dec 06 06:56:36.136 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.136 INFO [stderr]    --> src/scanner.rs:77:39
Dec 06 06:56:36.136 INFO [stderr]     |
Dec 06 06:56:36.136 INFO [stderr] 77  |                   let tokens = tokenize($match_values.to_string());
Dec 06 06:56:36.136 INFO [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.136 INFO [stderr]     |                                         |
Dec 06 06:56:36.136 INFO [stderr]     |                                         expected &str, found struct `std::string::String`
Dec 06 06:56:36.136 INFO [stderr]     |                                         help: consider borrowing here: `&$match_values.to_string()`
Dec 06 06:56:36.136 INFO [stderr] ...
Dec 06 06:56:36.136 INFO [stderr] 111 | /     test_tokenizer!(
Dec 06 06:56:36.136 INFO [stderr] 112 | |         operator,
Dec 06 06:56:36.136 INFO [stderr] 113 | |         "+-*/^",
Dec 06 06:56:36.136 INFO [stderr] 114 | |         Token::Operator(_),
Dec 06 06:56:36.136 INFO [stderr] 115 | |         "Tokenizer does not recognize operators"
Dec 06 06:56:36.136 INFO [stderr] 116 | |     );
Dec 06 06:56:36.136 INFO [stderr]     | |______- in this macro invocation
Dec 06 06:56:36.136 INFO [stderr]     |
Dec 06 06:56:36.136 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.136 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.136 INFO [stderr] 
Dec 06 06:56:36.136 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.136 INFO [stderr]    --> src/scanner.rs:77:39
Dec 06 06:56:36.136 INFO [stderr]     |
Dec 06 06:56:36.136 INFO [stderr] 77  |                   let tokens = tokenize($match_values.to_string());
Dec 06 06:56:36.137 INFO [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.137 INFO [stderr]     |                                         |
Dec 06 06:56:36.137 INFO [stderr]     |                                         expected &str, found struct `std::string::String`
Dec 06 06:56:36.137 INFO [stderr]     |                                         help: consider borrowing here: `&$match_values.to_string()`
Dec 06 06:56:36.137 INFO [stderr] ...
Dec 06 06:56:36.137 INFO [stderr] 117 | /     test_tokenizer!(
Dec 06 06:56:36.137 INFO [stderr] 118 | |         comma,
Dec 06 06:56:36.137 INFO [stderr] 119 | |         ",",
Dec 06 06:56:36.137 INFO [stderr] 120 | |         Token::Comma,
Dec 06 06:56:36.137 INFO [stderr] 121 | |         "Tokenizer does not recognize comma."
Dec 06 06:56:36.137 INFO [stderr] 122 | |     );
Dec 06 06:56:36.137 INFO [stderr]     | |______- in this macro invocation
Dec 06 06:56:36.137 INFO [stderr]     |
Dec 06 06:56:36.137 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.137 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.137 INFO [stderr] 
Dec 06 06:56:36.140 INFO [stderr] error[E0308]: mismatched types
Dec 06 06:56:36.140 INFO [stderr]    --> src/scanner.rs:77:39
Dec 06 06:56:36.140 INFO [stderr]     |
Dec 06 06:56:36.140 INFO [stderr] 77  |                   let tokens = tokenize($match_values.to_string());
Dec 06 06:56:36.140 INFO [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:56:36.140 INFO [stderr]     |                                         |
Dec 06 06:56:36.140 INFO [stderr]     |                                         expected &str, found struct `std::string::String`
Dec 06 06:56:36.140 INFO [stderr]     |                                         help: consider borrowing here: `&$match_values.to_string()`
Dec 06 06:56:36.140 INFO [stderr] ...
Dec 06 06:56:36.140 INFO [stderr] 123 | /     test_tokenizer!(
Dec 06 06:56:36.140 INFO [stderr] 124 | |         external,
Dec 06 06:56:36.140 INFO [stderr] 125 | |         "sin(",
Dec 06 06:56:36.140 INFO [stderr] 126 | |         Token::External(_),
Dec 06 06:56:36.140 INFO [stderr] 127 | |         "Tokenizer does not recognize externals."
Dec 06 06:56:36.140 INFO [stderr] 128 | |     );
Dec 06 06:56:36.140 INFO [stderr]     | |______- in this macro invocation
Dec 06 06:56:36.140 INFO [stderr]     |
Dec 06 06:56:36.140 INFO [stderr]     = note: expected type `&str`
Dec 06 06:56:36.140 INFO [stderr]                found type `std::string::String`
Dec 06 06:56:36.140 INFO [stderr] 
Dec 06 06:56:36.144 INFO [stderr] error: aborting due to 15 previous errors
Dec 06 06:56:36.144 INFO [stderr] 
Dec 06 06:56:36.144 INFO [stderr] For more information about this error, try `rustc --explain E0308`.
Dec 06 06:56:36.156 INFO [stderr] error: Could not compile `rcalc`.
Dec 06 06:56:36.156 INFO [stderr] 
Dec 06 06:56:36.156 INFO [stderr] To learn more, run the command again with --verbose.
Dec 06 06:56:36.157 INFO [stderr] su: No module specific data is present
Dec 06 06:56:37.364 INFO running `"docker" "inspect" "bc47616b759690afbd378703deeeb7e5b3b6bb2b5859d0b19571a77a2b48b43e"`
Dec 06 06:56:37.652 INFO running `"docker" "rm" "-f" "bc47616b759690afbd378703deeeb7e5b3b6bb2b5859d0b19571a77a2b48b43e"`
Dec 06 06:56:37.918 INFO [stdout] bc47616b759690afbd378703deeeb7e5b3b6bb2b5859d0b19571a77a2b48b43e