[INFO] fetching crate strong_rc 0.1.4... [INFO] extracting crate strong_rc 0.1.4 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/strong_rc/0.1.4 [INFO] extracting crate strong_rc 0.1.4 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/strong_rc/0.1.4 [INFO] validating manifest of strong_rc-0.1.4 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of strong_rc-0.1.4 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing strong_rc-0.1.4 [INFO] finished frobbing strong_rc-0.1.4 [INFO] frobbed toml for strong_rc-0.1.4 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/strong_rc/0.1.4/Cargo.toml [INFO] started frobbing strong_rc-0.1.4 [INFO] finished frobbing strong_rc-0.1.4 [INFO] frobbed toml for strong_rc-0.1.4 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/strong_rc/0.1.4/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] checking strong_rc-0.1.4 against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-4/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/strong_rc/0.1.4:/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=forbid" "-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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 3dcb259c216e06436c23d786701b8f08e32a25ef8260b27065b11d9da7ddf46d [INFO] running `"docker" "start" "-a" "3dcb259c216e06436c23d786701b8f08e32a25ef8260b27065b11d9da7ddf46d"` [INFO] [stderr] Checking strong_rc v0.1.4 (/opt/crater/workdir) [INFO] [stderr] error[E0432]: unresolved import `alloc::heap` [INFO] [stderr] --> src/lib.rs:128:5 [INFO] [stderr] | [INFO] [stderr] 128 | use alloc::heap; [INFO] [stderr] | ^^^^^^^^^^^ no `heap` in the root [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `std::ptr::Shared` [INFO] [stderr] --> src/lib.rs:139:22 [INFO] [stderr] | [INFO] [stderr] 139 | use std::ptr::{self, Shared}; [INFO] [stderr] | ^^^^^^ no `Shared` in `ptr` [INFO] [stderr] [INFO] [stderr] error[E0374]: the trait `CoerceUnsized` may only be implemented for a coercion between structures with one field being coerced, none found [INFO] [stderr] --> src/lib.rs:190:1 [INFO] [stderr] | [INFO] [stderr] 190 | / impl CoerceUnsized> for Rc [INFO] [stderr] 191 | | where T: ?Sized + Unsize, [INFO] [stderr] 192 | | U: ?Sized {} [INFO] [stderr] | |__________________^ [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `alloc::heap` [INFO] [stderr] --> src/lib.rs:128:5 [INFO] [stderr] | [INFO] [stderr] 128 | use alloc::heap; [INFO] [stderr] | ^^^^^^^^^^^ no `heap` in the root [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `std::ptr::Shared` [INFO] [stderr] --> src/lib.rs:139:22 [INFO] [stderr] | [INFO] [stderr] 139 | use std::ptr::{self, Shared}; [INFO] [stderr] | ^^^^^^ no `Shared` in `ptr` [INFO] [stderr] [INFO] [stderr] error: aborting due to 3 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0374, E0432. [INFO] [stderr] For more information about an error, try `rustc --explain E0374`. [INFO] [stderr] error: Could not compile `strong_rc`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error[E0374]: the trait `CoerceUnsized` may only be implemented for a coercion between structures with one field being coerced, none found [INFO] [stderr] --> src/lib.rs:190:1 [INFO] [stderr] | [INFO] [stderr] 190 | / impl CoerceUnsized> for Rc [INFO] [stderr] 191 | | where T: ?Sized + Unsize, [INFO] [stderr] 192 | | U: ?Sized {} [INFO] [stderr] | |__________________^ [INFO] [stderr] [INFO] [stderr] error: aborting due to 3 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0374, E0432. [INFO] [stderr] For more information about an error, try `rustc --explain E0374`. [INFO] [stderr] error: Could not compile `strong_rc`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "3dcb259c216e06436c23d786701b8f08e32a25ef8260b27065b11d9da7ddf46d"` [INFO] running `"docker" "rm" "-f" "3dcb259c216e06436c23d786701b8f08e32a25ef8260b27065b11d9da7ddf46d"` [INFO] [stdout] 3dcb259c216e06436c23d786701b8f08e32a25ef8260b27065b11d9da7ddf46d