[INFO] fetching crate monilog 0.1.1...
[INFO] checking monilog-0.1.1 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] extracting crate monilog 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate monilog 0.1.1 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate monilog 0.1.1
[INFO] finished tweaking crates.io crate monilog 0.1.1
[INFO] tweaked toml for crates.io crate monilog 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25c02e141b53f47bf412f71dec81eed6486fd655d77700bf1d9f7be22e7729e2
[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" "25c02e141b53f47bf412f71dec81eed6486fd655d77700bf1d9f7be22e7729e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25c02e141b53f47bf412f71dec81eed6486fd655d77700bf1d9f7be22e7729e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25c02e141b53f47bf412f71dec81eed6486fd655d77700bf1d9f7be22e7729e2", kill_on_drop: false }`
[INFO] [stdout] 25c02e141b53f47bf412f71dec81eed6486fd655d77700bf1d9f7be22e7729e2
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a094737fadfa48c38e432ecd68184c4912552742dbbe05296ea65ed31d52652c
[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" "a094737fadfa48c38e432ecd68184c4912552742dbbe05296ea65ed31d52652c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking monilog v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/main.rs:93:48
[INFO] [stdout]    |
[INFO] [stdout] 93 |                         print!("{} ", captures.at(1).unwrap());
[INFO] [stdout]    |                                                ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/main.rs:95:40
[INFO] [stdout]    |
[INFO] [stdout] 95 |                         match captures.at(2).unwrap() {
[INFO] [stdout]    |                                        ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]    --> src/main.rs:105:48
[INFO] [stdout]     |
[INFO] [stdout] 105 |                         print!("{} ", captures.at(2).unwrap());
[INFO] [stdout]     |                                                ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]    --> src/main.rs:106:49
[INFO] [stdout]     |
[INFO] [stdout] 106 |                         print!("{}\n", captures.at(3).unwrap());
[INFO] [stdout]     |                                                 ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/main.rs:93:48
[INFO] [stdout]    |
[INFO] [stdout] 93 |                         print!("{} ", captures.at(1).unwrap());
[INFO] [stdout]    |                                                ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/main.rs:95:40
[INFO] [stdout]    |
[INFO] [stdout] 95 |                         match captures.at(2).unwrap() {
[INFO] [stdout]    |                                        ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]    --> src/main.rs:105:48
[INFO] [stdout]     |
[INFO] [stdout] 105 |                         print!("{} ", captures.at(2).unwrap());
[INFO] [stdout]     |                                                ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for reference `&regex::Captures<'_>` in the current scope
[INFO] [stdout]    --> src/main.rs:106:49
[INFO] [stdout]     |
[INFO] [stdout] 106 |                         print!("{}\n", captures.at(3).unwrap());
[INFO] [stdout]     |                                                 ^^ method not found in `&regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `monilog`
[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" "a094737fadfa48c38e432ecd68184c4912552742dbbe05296ea65ed31d52652c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a094737fadfa48c38e432ecd68184c4912552742dbbe05296ea65ed31d52652c", kill_on_drop: false }`
[INFO] [stdout] a094737fadfa48c38e432ecd68184c4912552742dbbe05296ea65ed31d52652c