[INFO] fetching crate enumflags2 0.7.0-preview1...
[INFO] checking enumflags2-0.7.0-preview1 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate enumflags2 0.7.0-preview1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate enumflags2 0.7.0-preview1 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enumflags2 0.7.0-preview1
[INFO] finished tweaking crates.io crate enumflags2 0.7.0-preview1
[INFO] tweaked toml for crates.io crate enumflags2 0.7.0-preview1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", 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] 1019210d93ecf085f86a535c45271f28e0a90539d889f026c5ee4c2dc624c074
[INFO] running `Command { std: "docker" "start" "-a" "1019210d93ecf085f86a535c45271f28e0a90539d889f026c5ee4c2dc624c074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1019210d93ecf085f86a535c45271f28e0a90539d889f026c5ee4c2dc624c074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1019210d93ecf085f86a535c45271f28e0a90539d889f026c5ee4c2dc624c074", kill_on_drop: false }`
[INFO] [stdout] 1019210d93ecf085f86a535c45271f28e0a90539d889f026c5ee4c2dc624c074
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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] fe163e5459db15175461f16c90749bfa678207ae56fe4750fc874b013ece4b0c
[INFO] running `Command { std: "docker" "start" "-a" "fe163e5459db15175461f16c90749bfa678207ae56fe4750fc874b013ece4b0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling enumflags2_derive v0.7.0-preview1
[INFO] [stderr]     Checking enumflags2 v0.7.0-preview1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `criterion`
[INFO] [stdout]  --> benches/from_iterator.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |     ^^^^^^^^^ use of undeclared crate or module `criterion`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `criterion_group`
[INFO] [stdout]   --> benches/from_iterator.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | criterion_group!(benches, iterators);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `criterion_main`
[INFO] [stdout]   --> benches/from_iterator.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | criterion_main!(benches);
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enumflags2`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fe163e5459db15175461f16c90749bfa678207ae56fe4750fc874b013ece4b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe163e5459db15175461f16c90749bfa678207ae56fe4750fc874b013ece4b0c", kill_on_drop: false }`
[INFO] [stdout] fe163e5459db15175461f16c90749bfa678207ae56fe4750fc874b013ece4b0c