[INFO] fetching crate istring 0.1.13...
[INFO] checking istring-0.1.13 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate istring 0.1.13 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate istring 0.1.13 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate istring 0.1.13
[INFO] finished tweaking crates.io crate istring 0.1.13
[INFO] tweaked toml for crates.io crate istring 0.1.13 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83c1d33d3d999126d27bdf88739b8d3e216006318e4c4408ecb5e3963652cb5a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "83c1d33d3d999126d27bdf88739b8d3e216006318e4c4408ecb5e3963652cb5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83c1d33d3d999126d27bdf88739b8d3e216006318e4c4408ecb5e3963652cb5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83c1d33d3d999126d27bdf88739b8d3e216006318e4c4408ecb5e3963652cb5a", kill_on_drop: false }`
[INFO] [stdout] 83c1d33d3d999126d27bdf88739b8d3e216006318e4c4408ecb5e3963652cb5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6e0a6fe91953863a832ad25145cc38ffed0400ef4449ae74e980ea078231fb20
[INFO] running `Command { std: "docker" "start" "-a" "6e0a6fe91953863a832ad25145cc38ffed0400ef4449ae74e980ea078231fb20", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking istring v0.1.13 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `alloc::alloc::Alloc`
[INFO] [stdout]   --> src/lib.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 | use alloc::alloc::{Alloc, Layout};
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    no `Alloc` in `alloc`
[INFO] [stdout]    |                    help: a similar name exists in the module: `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `istring`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0432]: unresolved import `alloc::alloc::Alloc`
[INFO] [stdout]   --> src/lib.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 | use alloc::alloc::{Alloc, Layout};
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    no `Alloc` in `alloc`
[INFO] [stdout]    |                    help: a similar name exists in the module: `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6e0a6fe91953863a832ad25145cc38ffed0400ef4449ae74e980ea078231fb20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e0a6fe91953863a832ad25145cc38ffed0400ef4449ae74e980ea078231fb20", kill_on_drop: false }`
[INFO] [stdout] 6e0a6fe91953863a832ad25145cc38ffed0400ef4449ae74e980ea078231fb20