[INFO] fetching crate strscan 0.1.1...
[INFO] checking strscan-0.1.1 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate strscan 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate strscan 0.1.1 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate strscan 0.1.1
[INFO] finished tweaking crates.io crate strscan 0.1.1
[INFO] tweaked toml for crates.io crate strscan 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc9e90673c36b1e32cd757bef496fd4d8cb8e6518d777e82f493bf47a04dff8a
[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" "cc9e90673c36b1e32cd757bef496fd4d8cb8e6518d777e82f493bf47a04dff8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc9e90673c36b1e32cd757bef496fd4d8cb8e6518d777e82f493bf47a04dff8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc9e90673c36b1e32cd757bef496fd4d8cb8e6518d777e82f493bf47a04dff8a", kill_on_drop: false }`
[INFO] [stdout] cc9e90673c36b1e32cd757bef496fd4d8cb8e6518d777e82f493bf47a04dff8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] 2737d992ca8bebfa198c91f83db8c4aac33882f8a4e8c24844e1b356fa96f57d
[INFO] running `Command { std: "docker" "start" "-a" "2737d992ca8bebfa198c91f83db8c4aac33882f8a4e8c24844e1b356fa96f57d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking strscan v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `slice_chars` found for reference `&str` in the current scope
[INFO] [stdout]   --> src/strscan.rs:95:19
[INFO] [stdout]    |
[INFO] [stdout] 95 |         Some(rest.slice_chars(0, len))
[INFO] [stdout]    |                   ^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `slice_chars` found for reference `&str` in the current scope
[INFO] [stdout]   --> src/strscan.rs:95:19
[INFO] [stdout]    |
[INFO] [stdout] 95 |         Some(rest.slice_chars(0, len))
[INFO] [stdout]    |                   ^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `slice_chars` found for reference `&str` in the current scope
[INFO] [stdout]    --> src/strscan.rs:113:24
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let chr = rest.slice_chars(0, 1);
[INFO] [stdout]     |                        ^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `slice_chars` found for reference `&str` in the current scope
[INFO] [stdout]    --> src/strscan.rs:113:24
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let chr = rest.slice_chars(0, 1);
[INFO] [stdout]     |                        ^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `strscan` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2737d992ca8bebfa198c91f83db8c4aac33882f8a4e8c24844e1b356fa96f57d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2737d992ca8bebfa198c91f83db8c4aac33882f8a4e8c24844e1b356fa96f57d", kill_on_drop: false }`
[INFO] [stdout] 2737d992ca8bebfa198c91f83db8c4aac33882f8a4e8c24844e1b356fa96f57d