[INFO] cloning repository https://github.com/Foltik/automaton
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Foltik/automaton" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFoltik%2Fautomaton", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFoltik%2Fautomaton'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0459e54e4c0f0809466dec1ac22411a12be41bc8
[INFO] checking Foltik/automaton against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFoltik%2Fautomaton" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Foltik/automaton on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Foltik/automaton
[INFO] finished tweaking git repo https://github.com/Foltik/automaton
[INFO] tweaked toml for git repo https://github.com/Foltik/automaton written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Foltik/automaton already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tinytemplate v1.0.1
[INFO] [stderr]   Downloaded criterion-plot v0.3.1
[INFO] [stderr]   Downloaded rand_xoshiro v0.1.0
[INFO] [stderr]   Downloaded bitflags v1.0.5
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] [stderr]   Downloaded csv v1.0.7
[INFO] [stderr]   Downloaded criterion v0.2.11
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd443520f9d0969115371c4dfcaa4338ba51f2fedb9b7bb02a917e1e6fbb27fb
[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" "dd443520f9d0969115371c4dfcaa4338ba51f2fedb9b7bb02a917e1e6fbb27fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd443520f9d0969115371c4dfcaa4338ba51f2fedb9b7bb02a917e1e6fbb27fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd443520f9d0969115371c4dfcaa4338ba51f2fedb9b7bb02a917e1e6fbb27fb", kill_on_drop: false }`
[INFO] [stdout] dd443520f9d0969115371c4dfcaa4338ba51f2fedb9b7bb02a917e1e6fbb27fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5015794b4c7f314a88486b81c447b9774a32a394162693ada4691e831bd1a352
[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" "5015794b4c7f314a88486b81c447b9774a32a394162693ada4691e831bd1a352", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking memchr v2.2.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking tinytemplate v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking automaton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> benches/grid_mem_bench.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(existential_type)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(type_alias_impl_trait)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> benches/grid_bench.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(existential_type)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(type_alias_impl_trait)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hashbrown::HashMap`
[INFO] [stdout]   --> benches/grid_mem_bench.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use hashbrown::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rayon::prelude`
[INFO] [stdout]   --> benches/grid_mem_bench.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rayon::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `automaton`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[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" "5015794b4c7f314a88486b81c447b9774a32a394162693ada4691e831bd1a352", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5015794b4c7f314a88486b81c447b9774a32a394162693ada4691e831bd1a352", kill_on_drop: false }`
[INFO] [stdout] 5015794b4c7f314a88486b81c447b9774a32a394162693ada4691e831bd1a352