[INFO] fetching crate persistentcache 0.1.6...
[INFO] checking persistentcache-0.1.6 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate persistentcache 0.1.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate persistentcache 0.1.6 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 crates.io crate persistentcache 0.1.6
[INFO] finished tweaking crates.io crate persistentcache 0.1.6
[INFO] tweaked toml for crates.io crate persistentcache 0.1.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 04574acb0612331e9e44e37aff931fb4c01814c933bd6f71516ad6941ea0a097
[INFO] running `Command { std: "docker" "start" "-a" "04574acb0612331e9e44e37aff931fb4c01814c933bd6f71516ad6941ea0a097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04574acb0612331e9e44e37aff931fb4c01814c933bd6f71516ad6941ea0a097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04574acb0612331e9e44e37aff931fb4c01814c933bd6f71516ad6941ea0a097", kill_on_drop: false }`
[INFO] [stdout] 04574acb0612331e9e44e37aff931fb4c01814c933bd6f71516ad6941ea0a097
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] 4da88fac9e2b7bd86e90db8b934afc30450d141cd02d21883a9862e5d227596d
[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" "4da88fac9e2b7bd86e90db8b934afc30450d141cd02d21883a9862e5d227596d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling redis v0.8.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling proc-macro2 v0.1.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling futures-await-quote v0.4.0
[INFO] [stderr]    Compiling futures-await-synom v0.12.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]    Compiling futures-await-syn v0.12.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling persistentcache_procmacro v0.0.3
[INFO] [stderr]     Checking persistentcache v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:246:12
[INFO] [stdout]     |
[INFO] [stdout] 246 | #![feature(proc_macro_gen)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: subsumed by `#![feature(proc_macro_hygiene)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:246:12
[INFO] [stdout]     |
[INFO] [stdout] 246 | #![feature(proc_macro_gen)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: subsumed by `#![feature(proc_macro_hygiene)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 | /     error_chain!{
[INFO] [stdout] 260 | |         foreign_links {
[INFO] [stdout] 261 | |             Redis(::redis::RedisError);
[INFO] [stdout] 262 | |             Regex(::regex::Error);
[INFO] [stdout] 263 | |             IO(::std::io::Error);
[INFO] [stdout] 264 | |         }
[INFO] [stdout] 265 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 | /     error_chain!{
[INFO] [stdout] 260 | |         foreign_links {
[INFO] [stdout] 261 | |             Redis(::redis::RedisError);
[INFO] [stdout] 262 | |             Regex(::regex::Error);
[INFO] [stdout] 263 | |             IO(::std::io::Error);
[INFO] [stdout] 264 | |         }
[INFO] [stdout] 265 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/lib.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 | /     error_chain!{
[INFO] [stdout] 260 | |         foreign_links {
[INFO] [stdout] 261 | |             Redis(::redis::RedisError);
[INFO] [stdout] 262 | |             Regex(::regex::Error);
[INFO] [stdout] 263 | |             IO(::std::io::Error);
[INFO] [stdout] 264 | |         }
[INFO] [stdout] 265 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 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 `persistentcache`
[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] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 | /     error_chain!{
[INFO] [stdout] 260 | |         foreign_links {
[INFO] [stdout] 261 | |             Redis(::redis::RedisError);
[INFO] [stdout] 262 | |             Regex(::regex::Error);
[INFO] [stdout] 263 | |             IO(::std::io::Error);
[INFO] [stdout] 264 | |         }
[INFO] [stdout] 265 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 | /     error_chain!{
[INFO] [stdout] 260 | |         foreign_links {
[INFO] [stdout] 261 | |             Redis(::redis::RedisError);
[INFO] [stdout] 262 | |             Regex(::regex::Error);
[INFO] [stdout] 263 | |             IO(::std::io::Error);
[INFO] [stdout] 264 | |         }
[INFO] [stdout] 265 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/lib.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 | /     error_chain!{
[INFO] [stdout] 260 | |         foreign_links {
[INFO] [stdout] 261 | |             Redis(::redis::RedisError);
[INFO] [stdout] 262 | |             Regex(::regex::Error);
[INFO] [stdout] 263 | |             IO(::std::io::Error);
[INFO] [stdout] 264 | |         }
[INFO] [stdout] 265 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4da88fac9e2b7bd86e90db8b934afc30450d141cd02d21883a9862e5d227596d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da88fac9e2b7bd86e90db8b934afc30450d141cd02d21883a9862e5d227596d", kill_on_drop: false }`
[INFO] [stdout] 4da88fac9e2b7bd86e90db8b934afc30450d141cd02d21883a9862e5d227596d