[INFO] updating cached repository abetkin/bigint [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/abetkin/bigint [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/abetkin/bigint" "work/ex/beta-1.38-1/sources/1.37.0/gh/abetkin/bigint"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/abetkin/bigint'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/abetkin/bigint" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/abetkin/bigint"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/abetkin/bigint'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 0655fb1f5d5a5c4328b3f058502a8bb90ff080a5 [INFO] sha for GitHub repo abetkin/bigint: 0655fb1f5d5a5c4328b3f058502a8bb90ff080a5 [INFO] validating manifest of abetkin/bigint on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of abetkin/bigint on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing abetkin/bigint [INFO] finished frobbing abetkin/bigint [INFO] frobbed toml for abetkin/bigint written to work/ex/beta-1.38-1/sources/1.37.0/gh/abetkin/bigint/Cargo.toml [INFO] started frobbing abetkin/bigint [INFO] finished frobbing abetkin/bigint [INFO] frobbed toml for abetkin/bigint written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/abetkin/bigint/Cargo.toml [INFO] crate abetkin/bigint already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing abetkin/bigint against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/abetkin/bigint:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 2a7a001b3f239c9eec644f866fde933fbeb441e33481a8689968e8b6f74323ed [INFO] running `"docker" "start" "-a" "2a7a001b3f239c9eec644f866fde933fbeb441e33481a8689968e8b6f74323ed"` [INFO] [stderr] Compiling bigint v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error: format argument must be a string literal [INFO] [stderr] --> src/main.rs:76:19 [INFO] [stderr] | [INFO] [stderr] 76 | write!(f, s.join(", ")); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] help: you might be missing a string literal to format with [INFO] [stderr] | [INFO] [stderr] 76 | write!(f, "{}", s.join(", ")); [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::ops::Add` [INFO] [stderr] --> src/main.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::ops::Add; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0277]: `std::vec::Vec` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:62:31 [INFO] [stderr] | [INFO] [stderr] 62 | print!("self {}", self.chunks); [INFO] [stderr] | ^^^^^^^^^^^ `std::vec::Vec` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `std::vec::Vec` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] error[E0277]: `std::vec::Vec` doesn't implement `std::fmt::Display` [INFO] [stderr] --> src/main.rs:63:32 [INFO] [stderr] | [INFO] [stderr] 63 | print!("other {}", other.chunks); [INFO] [stderr] | ^^^^^^^^^^^^ `std::vec::Vec` cannot be formatted with the default formatter [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::fmt::Display` is not implemented for `std::vec::Vec` [INFO] [stderr] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stderr] = note: required by `std::fmt::Display::fmt` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/main.rs:71:46 [INFO] [stderr] | [INFO] [stderr] 71 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { [INFO] [stderr] | --- ^^^^^^^^^^^ expected enum `std::result::Result`, found () [INFO] [stderr] | | [INFO] [stderr] | this function's body doesn't return [INFO] [stderr] ... [INFO] [stderr] 76 | write!(f, s.join(", ")); [INFO] [stderr] | - help: consider removing this semicolon [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::result::Result<(), std::fmt::Error>` [INFO] [stderr] found type `()` [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0277, E0308. [INFO] [stderr] For more information about an error, try `rustc --explain E0277`. [INFO] [stderr] error: Could not compile `bigint`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "2a7a001b3f239c9eec644f866fde933fbeb441e33481a8689968e8b6f74323ed"` [INFO] running `"docker" "rm" "-f" "2a7a001b3f239c9eec644f866fde933fbeb441e33481a8689968e8b6f74323ed"` [INFO] [stdout] 2a7a001b3f239c9eec644f866fde933fbeb441e33481a8689968e8b6f74323ed