[INFO] crate scan 0.1.0 is already in cache [INFO] extracting crate scan 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/scan/0.1.0 [INFO] extracting crate scan 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/scan/0.1.0 [INFO] validating manifest of scan-0.1.0 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 scan-0.1.0 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 scan-0.1.0 [INFO] finished frobbing scan-0.1.0 [INFO] frobbed toml for scan-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/scan/0.1.0/Cargo.toml [INFO] started frobbing scan-0.1.0 [INFO] finished frobbing scan-0.1.0 [INFO] frobbed toml for scan-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/scan/0.1.0/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [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 scan-0.1.0 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/scan/0.1.0:/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] a42607e4205c1b4d420a587c292fc2f9915783e74f0c4b9aed4cc3d8790cfd5c [INFO] running `"docker" "start" "-a" "a42607e4205c1b4d420a587c292fc2f9915783e74f0c4b9aed4cc3d8790cfd5c"` [INFO] [stderr] Compiling scan v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0432]: unresolved imports `std::io::Chars`, `std::io::CharsError` [INFO] [stderr] --> src/scan.rs:1:21 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io::{Read, Chars, CharsError, BufReader}; [INFO] [stderr] | ^^^^^ ^^^^^^^^^^ no `CharsError` in `io` [INFO] [stderr] | | [INFO] [stderr] | no `Chars` in `io` [INFO] [stderr] [INFO] [stderr] error[E0412]: cannot find type `CharsError` in module `io` [INFO] [stderr] --> src/scan.rs:51:27 [INFO] [stderr] | [INFO] [stderr] 51 | impl From for ScanError { [INFO] [stderr] | ^^^^^^^^^^ not found in `io` [INFO] [stderr] [INFO] [stderr] error[E0412]: cannot find type `CharsError` in module `io` [INFO] [stderr] --> src/scan.rs:52:20 [INFO] [stderr] | [INFO] [stderr] 52 | fn from(e: io::CharsError) -> ScanError { ScanError::Io(e) } [INFO] [stderr] | ^^^^^^^^^^ not found in `io` [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/lib.rs:40:1 [INFO] [stderr] | [INFO] [stderr] 40 | #![feature(io)] [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Display` [INFO] [stderr] --> src/scan.rs:6:23 [INFO] [stderr] | [INFO] [stderr] 6 | use std::fmt::{Debug, Display}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/scan.rs:71:32 [INFO] [stderr] | [INFO] [stderr] 71 | fn cause(&self) -> Option<&Error> { [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] error[E0207]: the type parameter `R` is not constrained by the impl trait, self type, or predicates [INFO] [stderr] --> src/scan.rs:184:6 [INFO] [stderr] | [INFO] [stderr] 184 | impl bool> Scanner, F> { [INFO] [stderr] | ^ unconstrained type parameter [INFO] [stderr] [INFO] [stderr] error[E0207]: the type parameter `R` is not constrained by the impl trait, self type, or predicates [INFO] [stderr] --> src/scan.rs:203:6 [INFO] [stderr] | [INFO] [stderr] 203 | impl Scanner, fn(&char) -> bool> { [INFO] [stderr] | ^ unconstrained type parameter [INFO] [stderr] [INFO] [stderr] error: aborting due to 6 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0207, E0412, E0432, E0554. [INFO] [stderr] For more information about an error, try `rustc --explain E0207`. [INFO] [stderr] error: Could not compile `scan`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "a42607e4205c1b4d420a587c292fc2f9915783e74f0c4b9aed4cc3d8790cfd5c"` [INFO] running `"docker" "rm" "-f" "a42607e4205c1b4d420a587c292fc2f9915783e74f0c4b9aed4cc3d8790cfd5c"` [INFO] [stdout] a42607e4205c1b4d420a587c292fc2f9915783e74f0c4b9aed4cc3d8790cfd5c