[INFO] cloning repository https://github.com/segfo/strbits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/segfo/strbits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsegfo%2Fstrbits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsegfo%2Fstrbits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df70aa5d9a0c53e72c12e32dd2c6df6d2bbb211d
[INFO] checking segfo/strbits against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsegfo%2Fstrbits" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/segfo/strbits 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/segfo/strbits
[INFO] finished tweaking git repo https://github.com/segfo/strbits
[INFO] tweaked toml for git repo https://github.com/segfo/strbits written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/segfo/strbits 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] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 421a5d5b8e84ae7d3c688b9077220c82a13e32dabcf69954d2d9ab065ba9924a
[INFO] running `Command { std: "docker" "start" "-a" "421a5d5b8e84ae7d3c688b9077220c82a13e32dabcf69954d2d9ab065ba9924a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "421a5d5b8e84ae7d3c688b9077220c82a13e32dabcf69954d2d9ab065ba9924a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421a5d5b8e84ae7d3c688b9077220c82a13e32dabcf69954d2d9ab065ba9924a", kill_on_drop: false }`
[INFO] [stdout] 421a5d5b8e84ae7d3c688b9077220c82a13e32dabcf69954d2d9ab065ba9924a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] fbc30e28095494e9b5bfdf56b5e3a0269d972b93b178c396476fd056dab04c95
[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" "fbc30e28095494e9b5bfdf56b5e3a0269d972b93b178c396476fd056dab04c95", kill_on_drop: false }`
[INFO] [stderr]     Checking strbits v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:33
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:45
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:57
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                                                         ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:83:21
[INFO] [stdout]    |
[INFO] [stdout] 83 |                 0x30...0x39 =>{
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:86:21
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 0x41...0x5a|0x61...0x7a=>{
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:86:33
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 0x41...0x5a|0x61...0x7a=>{
[INFO] [stdout]    |                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:33
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:45
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:82:57
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 0x20...0x2f|0x3a...0x40|0x5b...0x60|0x7b...0x7e=>num+=1,
[INFO] [stdout]    |                                                         ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:83:21
[INFO] [stdout]    |
[INFO] [stdout] 83 |                 0x30...0x39 =>{
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:86:21
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 0x41...0x5a|0x61...0x7a=>{
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:86:33
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 0x41...0x5a|0x61...0x7a=>{
[INFO] [stdout]    |                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/main.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let N = s.len();
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/main.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let N = s.len();
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "fbc30e28095494e9b5bfdf56b5e3a0269d972b93b178c396476fd056dab04c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbc30e28095494e9b5bfdf56b5e3a0269d972b93b178c396476fd056dab04c95", kill_on_drop: false }`
[INFO] [stdout] fbc30e28095494e9b5bfdf56b5e3a0269d972b93b178c396476fd056dab04c95