[INFO] cloning repository https://github.com/kurtlawrence/papyrus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kurtlawrence/papyrus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkurtlawrence%2Fpapyrus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkurtlawrence%2Fpapyrus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c7f0a669fed59d220bdefb161c568072126d3d5
[INFO] checking kurtlawrence/papyrus against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkurtlawrence%2Fpapyrus" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kurtlawrence/papyrus on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kurtlawrence/papyrus
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/kurtlawrence/papyrus
[INFO] tweaked toml for git repo https://github.com/kurtlawrence/papyrus written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/kurtlawrence/papyrus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] efcaa30e9e92bba31d9c84ef55de18bd6c3fb27b9cd612ecd0ba5836944c0341
[INFO] running `Command { std: "docker" "start" "-a" "efcaa30e9e92bba31d9c84ef55de18bd6c3fb27b9cd612ecd0ba5836944c0341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efcaa30e9e92bba31d9c84ef55de18bd6c3fb27b9cd612ecd0ba5836944c0341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efcaa30e9e92bba31d9c84ef55de18bd6c3fb27b9cd612ecd0ba5836944c0341", kill_on_drop: false }`
[INFO] [stdout] efcaa30e9e92bba31d9c84ef55de18bd6c3fb27b9cd612ecd0ba5836944c0341
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] 77af9c41ed013e4257a986a77a7157ac2792fefcb7e154a3e0b19bb870973c57
[INFO] running `Command { std: "docker" "start" "-a" "77af9c41ed013e4257a986a77a7157ac2792fefcb7e154a3e0b19bb870973c57", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v697.0.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v697.0.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking base91 v0.0.1
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling psm v0.1.12
[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling blake3 v0.3.7
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v697.0.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking libloading v0.6.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking thread_local v1.1.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rustc-ap-rustc_arena v697.0.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking walkdir v2.3.1
[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-697.0.0/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" "77af9c41ed013e4257a986a77a7157ac2792fefcb7e154a3e0b19bb870973c57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77af9c41ed013e4257a986a77a7157ac2792fefcb7e154a3e0b19bb870973c57", kill_on_drop: false }`
[INFO] [stdout] 77af9c41ed013e4257a986a77a7157ac2792fefcb7e154a3e0b19bb870973c57