[INFO] updating cached repository https://github.com/ddworken/RStrings [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a86b5349973dc6ef0b86088eabd08e8132c49573 [INFO] checking ddworken/RStrings against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddworken%2FRStrings" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ddworken/RStrings on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/ddworken/RStrings [INFO] finished tweaking git repo https://github.com/ddworken/RStrings [INFO] tweaked toml for git repo https://github.com/ddworken/RStrings written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/ddworken/RStrings already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] error: the lock file /workspace/builds/worker-6/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 [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] bff3c63a0521727520e37d3cfe7bdbf6dcb44317e9d6303c04eb299464d57fdf [INFO] running `"docker" "start" "-a" "bff3c63a0521727520e37d3cfe7bdbf6dcb44317e9d6303c04eb299464d57fdf"` [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking num_cpus v0.2.13 [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 docopt v0.6.86 [INFO] [stderr] Checking RStrings v0.0.2 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:66:16 [INFO] [stderr] | [INFO] [stderr] 66 | Ok(x) => bytes, //standard ok() err() [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `lenFile` [INFO] [stderr] --> src/main.rs:105:9 [INFO] [stderr] | [INFO] [stderr] 105 | let lenFile = file.len(); //used for out of range prevention [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lenFile` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:108:13 [INFO] [stderr] | [INFO] [stderr] 108 | let s = match str::from_utf8(&buf[0..i]) { //convert it to a UTF-8 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/main.rs:109:16 [INFO] [stderr] | [INFO] [stderr] 109 | Ok(n) => {}, [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:110:17 [INFO] [stderr] | [INFO] [stderr] 110 | Err(err) => { //keep track of whether or not we found a UTF-8 char [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `utf8CheckerTuple` is never read [INFO] [stderr] --> src/main.rs:160:25 [INFO] [stderr] | [INFO] [stderr] 160 | let mut utf8CheckerTuple = (false, 0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `char` [INFO] [stderr] --> src/main.rs:198:20 [INFO] [stderr] | [INFO] [stderr] 198 | for (index,char) in file.iter().enumerate() { //index,char b/c we need both [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_char` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:256:13 [INFO] [stderr] | [INFO] [stderr] 256 | for i in 0..threads { //initialize the vectors that will each hold the bytes in 1 file [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:294:25 [INFO] [stderr] | [INFO] [stderr] 294 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:308:12 [INFO] [stderr] | [INFO] [stderr] 308 | Ok(x) => bytes, //standard ok() err() [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:333:25 [INFO] [stderr] | [INFO] [stderr] 333 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:346:25 [INFO] [stderr] | [INFO] [stderr] 346 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:359:25 [INFO] [stderr] | [INFO] [stderr] 359 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:372:25 [INFO] [stderr] | [INFO] [stderr] 372 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:385:25 [INFO] [stderr] | [INFO] [stderr] 385 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:398:25 [INFO] [stderr] | [INFO] [stderr] 398 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:66:16 [INFO] [stderr] | [INFO] [stderr] 66 | Ok(x) => bytes, //standard ok() err() [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `lenFile` [INFO] [stderr] --> src/main.rs:105:9 [INFO] [stderr] | [INFO] [stderr] 105 | let lenFile = file.len(); //used for out of range prevention [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lenFile` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:108:13 [INFO] [stderr] | [INFO] [stderr] 108 | let s = match str::from_utf8(&buf[0..i]) { //convert it to a UTF-8 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/main.rs:109:16 [INFO] [stderr] | [INFO] [stderr] 109 | Ok(n) => {}, [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:110:17 [INFO] [stderr] | [INFO] [stderr] 110 | Err(err) => { //keep track of whether or not we found a UTF-8 char [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `utf8CheckerTuple` is never read [INFO] [stderr] --> src/main.rs:160:25 [INFO] [stderr] | [INFO] [stderr] 160 | let mut utf8CheckerTuple = (false, 0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `char` [INFO] [stderr] --> src/main.rs:198:20 [INFO] [stderr] | [INFO] [stderr] 198 | for (index,char) in file.iter().enumerate() { //index,char b/c we need both [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_char` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:256:13 [INFO] [stderr] | [INFO] [stderr] 256 | for i in 0..threads { //initialize the vectors that will each hold the bytes in 1 file [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:294:25 [INFO] [stderr] | [INFO] [stderr] 294 | Err(err) => "", [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:308:12 [INFO] [stderr] | [INFO] [stderr] 308 | Ok(x) => bytes, //standard ok() err() [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: 16 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.09s [INFO] running `"docker" "inspect" "bff3c63a0521727520e37d3cfe7bdbf6dcb44317e9d6303c04eb299464d57fdf"` [INFO] running `"docker" "rm" "-f" "bff3c63a0521727520e37d3cfe7bdbf6dcb44317e9d6303c04eb299464d57fdf"` [INFO] [stdout] bff3c63a0521727520e37d3cfe7bdbf6dcb44317e9d6303c04eb299464d57fdf