[INFO] fetching crate persistentcache 0.1.6...
[INFO] checking persistentcache-0.1.6 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate persistentcache 0.1.6 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate persistentcache 0.1.6 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded redis v0.8.0
[INFO] [stderr]   Downloaded cargo_metadata v0.5.8
[INFO] [stderr]   Downloaded if_chain v0.1.3
[INFO] [stderr]   Downloaded clippy_lints v0.0.188
[INFO] [stderr]   Downloaded clippy v0.0.188
[INFO] [stderr]   Downloaded persistentcache_procmacro v0.0.3
[INFO] [stderr]   Downloaded quine-mc_cluskey v0.2.4
[INFO] [stderr]   Downloaded pulldown-cmark v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 630fd29c73411ab95d54f56445e35d512d4a863c783325726bd3268e8e0ddc0b
[INFO] running `Command { std: "docker" "start" "-a" "630fd29c73411ab95d54f56445e35d512d4a863c783325726bd3268e8e0ddc0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "630fd29c73411ab95d54f56445e35d512d4a863c783325726bd3268e8e0ddc0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "630fd29c73411ab95d54f56445e35d512d4a863c783325726bd3268e8e0ddc0b", kill_on_drop: false }`
[INFO] [stdout] 630fd29c73411ab95d54f56445e35d512d4a863c783325726bd3268e8e0ddc0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a24181e56e4b85365980d439372bb5a2bbd7f3760506041ed2518e0d10c044ba
[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" "a24181e56e4b85365980d439372bb5a2bbd7f3760506041ed2518e0d10c044ba", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling redis v0.8.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling proc-macro2 v0.1.10
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling futures-await-quote v0.4.0
[INFO] [stderr]    Compiling futures-await-synom v0.12.0
[INFO] [stderr]    Compiling futures-await-syn v0.12.0
[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::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::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" "a24181e56e4b85365980d439372bb5a2bbd7f3760506041ed2518e0d10c044ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a24181e56e4b85365980d439372bb5a2bbd7f3760506041ed2518e0d10c044ba", kill_on_drop: false }`
[INFO] [stdout] a24181e56e4b85365980d439372bb5a2bbd7f3760506041ed2518e0d10c044ba