[INFO] fetching crate amplify_num 0.2.2...
[INFO] testing amplify_num-0.2.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate amplify_num 0.2.2 into /workspace/builds/worker-117/source
[INFO] validating manifest of crates.io crate amplify_num 0.2.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amplify_num 0.2.2
[INFO] finished tweaking crates.io crate amplify_num 0.2.2
[INFO] tweaked toml for crates.io crate amplify_num 0.2.2 written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c15b90653572c8b2621c839e2dcfbdf51d1551c84ab87d006c4432b82268efa9
[INFO] running `Command { std: "docker" "start" "-a" "c15b90653572c8b2621c839e2dcfbdf51d1551c84ab87d006c4432b82268efa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c15b90653572c8b2621c839e2dcfbdf51d1551c84ab87d006c4432b82268efa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c15b90653572c8b2621c839e2dcfbdf51d1551c84ab87d006c4432b82268efa9", kill_on_drop: false }`
[INFO] [stdout] c15b90653572c8b2621c839e2dcfbdf51d1551c84ab87d006c4432b82268efa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6732f625ca8008926da3f836eccdae8b9f03bb963aa71104c2daff72ad9af42a
[INFO] running `Command { std: "docker" "start" "-a" "6732f625ca8008926da3f836eccdae8b9f03bb963aa71104c2daff72ad9af42a", kill_on_drop: false }`
[INFO] [stderr]    Compiling amplify_num v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "6732f625ca8008926da3f836eccdae8b9f03bb963aa71104c2daff72ad9af42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6732f625ca8008926da3f836eccdae8b9f03bb963aa71104c2daff72ad9af42a", kill_on_drop: false }`
[INFO] [stdout] 6732f625ca8008926da3f836eccdae8b9f03bb963aa71104c2daff72ad9af42a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e8000a32756a227499168dcd2a1960d5f277d9caef969c5a6ce97f9a6c2f6b4
[INFO] running `Command { std: "docker" "start" "-a" "1e8000a32756a227499168dcd2a1960d5f277d9caef969c5a6ce97f9a6c2f6b4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling amplify_num v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:299:20
[INFO] [stdout]     |
[INFO] [stdout] 299 |         assert_eq!(format!("{:26x}", bytes), "0000000a090807060504030201");
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:298:20
[INFO] [stdout]     |
[INFO] [stdout] 298 |         assert_eq!(format!("{:25x}", bytes), "000000a090807060504030201");
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:293:17
[INFO] [stdout]     |
[INFO] [stdout] 293 |                 format!("{:.prec$x}", bytes, prec = i),
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:289:20
[INFO] [stdout]     |
[INFO] [stdout] 289 |         assert_eq!(format!("{:x}", bytes), "0a090807060504030201");
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `vec` in this scope
[INFO] [stdout]    --> src/hex.rs:287:30
[INFO] [stdout]     |
[INFO] [stdout] 287 |         let bytes = HexBytes(vec![1u8, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:275:20
[INFO] [stdout]     |
[INFO] [stdout] 275 |         assert_eq!(format!("{:26x}", bytes), "0000000102030405060708090a");
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:274:20
[INFO] [stdout]     |
[INFO] [stdout] 274 |         assert_eq!(format!("{:25x}", bytes), "000000102030405060708090a");
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:269:17
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 format!("{:.prec$x}", bytes, prec = i),
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/hex.rs:265:20
[INFO] [stdout]     |
[INFO] [stdout] 265 |         assert_eq!(format!("{:x}", bytes), "0102030405060708090a");
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `vec` in this scope
[INFO] [stdout]    --> src/hex.rs:263:30
[INFO] [stdout]     |
[INFO] [stdout] 263 |         let bytes = HexBytes(vec![1u8, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `vec` in this scope
[INFO] [stdout]    --> src/hex.rs:244:27
[INFO] [stdout]     |
[INFO] [stdout] 244 |         assert_eq!(parse, vec![0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef]);
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `vec` in this scope
[INFO] [stdout]    --> src/hex.rs:239:27
[INFO] [stdout]     |
[INFO] [stdout] 239 |         assert_eq!(parse, vec![0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef]);
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]   --> src/hex.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         format!("{:x}", self)
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/bigint.rs:972:13
[INFO] [stdout]     |
[INFO] [stdout] 972 |             format!("{}", max_val),
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/bigint.rs:961:13
[INFO] [stdout]     |
[INFO] [stdout] 961 |             format!("{}", u256::from(::core::u64::MAX)),
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/bigint.rs:957:13
[INFO] [stdout]     |
[INFO] [stdout] 957 |             format!("{}", u256::from(0xDEADBEEFu64)),
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `std`
[INFO] [stdout]     --> src/bigint.rs:1139:23
[INFO] [stdout]      |
[INFO] [stdout] 1139 |         let result1 = std::panic::catch_unwind(|| u256::div_rem(max, zero));
[INFO] [stdout]      |                       ^^^ use of undeclared crate or module `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `std`
[INFO] [stdout]     --> src/bigint.rs:1141:23
[INFO] [stdout]      |
[INFO] [stdout] 1141 |         let result2 = std::panic::catch_unwind(|| u256::div_rem(number_one, zero));
[INFO] [stdout]      |                       ^^^ use of undeclared crate or module `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `std`
[INFO] [stdout]     --> src/bigint.rs:1143:23
[INFO] [stdout]      |
[INFO] [stdout] 1143 |         let result3 = std::panic::catch_unwind(|| u256::div_rem(number_two, zero));
[INFO] [stdout]      |                       ^^^ use of undeclared crate or module `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `String`
[INFO] [stdout]    --> src/hex.rs:168:23
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let mut ret = String::with_capacity(2 * self.len());
[INFO] [stdout]     |                       ^^^^^^ use of undeclared type `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `String` in this scope
[INFO] [stdout]   --> src/hex.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn to_hex(&self) -> String;
[INFO] [stdout]    |                         ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `serde_crate::__private::de::Content::String` and 1 other; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn to_hex(&self) -> serde_crate::__private::de::Content;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     fn to_hex(&self) -> serde_json::Value;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `String` in this scope
[INFO] [stdout]   --> src/hex.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn to_hex(&self) -> String {
[INFO] [stdout]    |                         ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `serde_crate::__private::de::Content::String` and 1 other; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn to_hex(&self) -> serde_crate::__private::de::Content {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 73 |     fn to_hex(&self) -> serde_json::Value {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `String` in this scope
[INFO] [stdout]    --> src/hex.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn to_hex(&self) -> String {
[INFO] [stdout]     |                         ^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: there is an enum variant `serde_crate::__private::de::Content::String` and 1 other; try using the variant's enum
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn to_hex(&self) -> serde_crate::__private::de::Content {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 166 |     fn to_hex(&self) -> serde_json::Value {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/hex.rs:177:18
[INFO] [stdout]     |
[INFO] [stdout] 177 | impl FromHex for Vec<u8> {
[INFO] [stdout]     |                  ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 19  | use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/hex.rs:238:20
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let parse: Vec<u8> = FromHex::from_hex(expected).expect("parse lowercase string");
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/hex.rs:243:20
[INFO] [stdout]     |
[INFO] [stdout] 243 |         let parse: Vec<u8> = FromHex::from_hex(expected_up).expect("parse uppercase string");
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/hex.rs:256:25
[INFO] [stdout]     |
[INFO] [stdout] 256 |         struct HexBytes(Vec<u8>);
[INFO] [stdout]     |                         ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/hex.rs:280:25
[INFO] [stdout]     |
[INFO] [stdout] 280 |         struct HexBytes(Vec<u8>);
[INFO] [stdout]     |                         ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Vec`
[INFO] [stdout]    --> src/hex.rs:309:20
[INFO] [stdout]     |
[INFO] [stdout] 309 |         assert_eq!(Vec::<u8>::from_hex(oddlen), Err(Error::OddLengthString(17)));
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Vec`
[INFO] [stdout]    --> src/hex.rs:312:20
[INFO] [stdout]     |
[INFO] [stdout] 312 |         assert_eq!(Vec::<u8>::from_hex(badchar1), Err(Error::InvalidChar(b'Z')));
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Vec`
[INFO] [stdout]    --> src/hex.rs:313:20
[INFO] [stdout]     |
[INFO] [stdout] 313 |         assert_eq!(Vec::<u8>::from_hex(badchar2), Err(Error::InvalidChar(b'Y')));
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Vec`
[INFO] [stdout]    --> src/hex.rs:314:20
[INFO] [stdout]     |
[INFO] [stdout] 314 |         assert_eq!(Vec::<u8>::from_hex(badchar3), Err(Error::InvalidChar(194)));
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use serde_crate::__private::Vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]    --> src/hex.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |         use core::fmt::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 32 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amplify_num` due to 33 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "1e8000a32756a227499168dcd2a1960d5f277d9caef969c5a6ce97f9a6c2f6b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e8000a32756a227499168dcd2a1960d5f277d9caef969c5a6ce97f9a6c2f6b4", kill_on_drop: false }`
[INFO] [stdout] 1e8000a32756a227499168dcd2a1960d5f277d9caef969c5a6ce97f9a6c2f6b4