[INFO] fetching crate cargo-modules 0.4.10...
[INFO] checking cargo-modules-0.4.10 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate cargo-modules 0.4.10 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cargo-modules 0.4.10 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-modules 0.4.10
[INFO] finished tweaking crates.io crate cargo-modules 0.4.10
[INFO] tweaked toml for crates.io crate cargo-modules 0.4.10 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cargo-modules 0.4.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded psm v0.1.12
[INFO] [stderr]   Downloaded md-5 v0.9.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v693.0.0
[INFO] [stderr]   Downloaded measureme v9.0.0
[INFO] [stderr]   Downloaded parking_lot_core v0.8.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v693.0.0
[INFO] [stderr]   Downloaded stacker v0.1.12
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v693.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 667be60b688ef1f39eeeaa1c26665f0b6dd5f82a50e33b393db0b0025c9b91ea
[INFO] running `Command { std: "docker" "start" "-a" "667be60b688ef1f39eeeaa1c26665f0b6dd5f82a50e33b393db0b0025c9b91ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "667be60b688ef1f39eeeaa1c26665f0b6dd5f82a50e33b393db0b0025c9b91ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "667be60b688ef1f39eeeaa1c26665f0b6dd5f82a50e33b393db0b0025c9b91ea", kill_on_drop: false }`
[INFO] [stdout] 667be60b688ef1f39eeeaa1c26665f0b6dd5f82a50e33b393db0b0025c9b91ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 225ab27bc2b137a6686d9d81251b87f6b0c16088fc84409894f09634a0700d1c
[INFO] running `Command { std: "docker" "start" "-a" "225ab27bc2b137a6686d9d81251b87f6b0c16088fc84409894f09634a0700d1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v693.0.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v693.0.0
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling psm v0.1.12
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v693.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_arena v693.0.0
[INFO] [stderr]     Checking typenum v1.12.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stdout] error[E0635]: unknown feature `array_value_iter_slice`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_arena-693.0.0/src/lib.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(array_value_iter_slice)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[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 E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_arena`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "225ab27bc2b137a6686d9d81251b87f6b0c16088fc84409894f09634a0700d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "225ab27bc2b137a6686d9d81251b87f6b0c16088fc84409894f09634a0700d1c", kill_on_drop: false }`
[INFO] [stdout] 225ab27bc2b137a6686d9d81251b87f6b0c16088fc84409894f09634a0700d1c