[INFO] crate persistent_rope 0.1.2 is already in cache [INFO] extracting crate persistent_rope 0.1.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/persistent_rope/0.1.2 [INFO] extracting crate persistent_rope 0.1.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/persistent_rope/0.1.2 [INFO] validating manifest of persistent_rope-0.1.2 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 persistent_rope-0.1.2 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 persistent_rope-0.1.2 [INFO] finished frobbing persistent_rope-0.1.2 [INFO] frobbed toml for persistent_rope-0.1.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/persistent_rope/0.1.2/Cargo.toml [INFO] started frobbing persistent_rope-0.1.2 [INFO] finished frobbing persistent_rope-0.1.2 [INFO] frobbed toml for persistent_rope-0.1.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/persistent_rope/0.1.2/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] [stderr] Blocking waiting for file lock on package cache [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] [stderr] Blocking waiting for file lock on package cache [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] [stderr] Blocking waiting for file lock on package cache [INFO] testing persistent_rope-0.1.2 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/persistent_rope/0.1.2:/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] d862b7dcabe636985c5bc7d112e9f5462f50aaa8f94757d01b9b58f3807c38d0 [INFO] running `"docker" "start" "-a" "d862b7dcabe636985c5bc7d112e9f5462f50aaa8f94757d01b9b58f3807c38d0"` [INFO] [stderr] Compiling persistent_rope v0.1.2 (/opt/crater/workdir) [INFO] [stderr] error[E0432]: unresolved import `alloc::arc` [INFO] [stderr] --> src/rope.rs:1:12 [INFO] [stderr] | [INFO] [stderr] 1 | use alloc::arc::Arc; [INFO] [stderr] | ^^^ could not find `arc` in `alloc` [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/lib.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(alloc)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0119]: conflicting implementations of trait `core::ops::Add` for type `rope::Rope`: [INFO] [stderr] --> src/rope.rs:617:1 [INFO] [stderr] | [INFO] [stderr] 578 | / impl Add for Rope [INFO] [stderr] 579 | | where [INFO] [stderr] 580 | | T: Into, [INFO] [stderr] 581 | | { [INFO] [stderr] ... | [INFO] [stderr] 594 | | } [INFO] [stderr] 595 | | } [INFO] [stderr] | |_- first implementation here [INFO] [stderr] ... [INFO] [stderr] 617 | impl Add for Rope { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `rope::Rope` [INFO] [stderr] [INFO] [stderr] error[E0119]: conflicting implementations of trait `core::ops::Add` for type `&rope::Rope`: [INFO] [stderr] --> src/rope.rs:631:1 [INFO] [stderr] | [INFO] [stderr] 597 | / impl<'a, T> Add for &'a Rope [INFO] [stderr] 598 | | where [INFO] [stderr] 599 | | T: Into, [INFO] [stderr] 600 | | { [INFO] [stderr] ... | [INFO] [stderr] 614 | | } [INFO] [stderr] 615 | | } [INFO] [stderr] | |_- first implementation here [INFO] [stderr] ... [INFO] [stderr] 631 | impl<'a> Add for &'a Rope { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `&rope::Rope` [INFO] [stderr] [INFO] [stderr] error[E0119]: conflicting implementations of trait `core::convert::From<[type error]>` for type `rope::Rope`: [INFO] [stderr] --> src/rope.rs:535:1 [INFO] [stderr] | [INFO] [stderr] 518 | impl From> for Rope { [INFO] [stderr] | ----------------------------- first implementation here [INFO] [stderr] ... [INFO] [stderr] 535 | impl<'a> From<&'a Rope> for Rope { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `rope::Rope` [INFO] [stderr] [INFO] [stderr] error[E0119]: conflicting implementations of trait `core::convert::From<[type error]>` for type `rope::Rope`: [INFO] [stderr] --> src/rope.rs:542:1 [INFO] [stderr] | [INFO] [stderr] 518 | impl From> for Rope { [INFO] [stderr] | ----------------------------- first implementation here [INFO] [stderr] ... [INFO] [stderr] 542 | impl<'a> From<&'a str> for Rope { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `rope::Rope` [INFO] [stderr] [INFO] [stderr] error[E0119]: conflicting implementations of trait `core::convert::From<[type error]>` for type `rope::Rope`: [INFO] [stderr] --> src/rope.rs:548:1 [INFO] [stderr] | [INFO] [stderr] 518 | impl From> for Rope { [INFO] [stderr] | ----------------------------- first implementation here [INFO] [stderr] ... [INFO] [stderr] 548 | impl<'a> From<&'a String> for Rope { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `rope::Rope` [INFO] [stderr] [INFO] [stderr] error[E0119]: conflicting implementations of trait `core::convert::From<[type error]>` for type `rope::Rope`: [INFO] [stderr] --> src/rope.rs:554:1 [INFO] [stderr] | [INFO] [stderr] 518 | impl From> for Rope { [INFO] [stderr] | ----------------------------- first implementation here [INFO] [stderr] ... [INFO] [stderr] 554 | impl From for Rope { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `rope::Rope` [INFO] [stderr] [INFO] [stderr] error: aborting due to 8 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0119, E0432, E0554. [INFO] [stderr] For more information about an error, try `rustc --explain E0119`. [INFO] [stderr] error: Could not compile `persistent_rope`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "d862b7dcabe636985c5bc7d112e9f5462f50aaa8f94757d01b9b58f3807c38d0"` [INFO] running `"docker" "rm" "-f" "d862b7dcabe636985c5bc7d112e9f5462f50aaa8f94757d01b9b58f3807c38d0"` [INFO] [stdout] d862b7dcabe636985c5bc7d112e9f5462f50aaa8f94757d01b9b58f3807c38d0