[INFO] cloning repository https://github.com/Simhyeon/r4d
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Simhyeon/r4d" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimhyeon%2Fr4d", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimhyeon%2Fr4d'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bad19e8d9d36373c4e595d57b9b1602011c7953c
[INFO] checking Simhyeon/r4d against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimhyeon%2Fr4d" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Simhyeon/r4d on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Simhyeon/r4d
[INFO] finished tweaking git repo https://github.com/Simhyeon/r4d
[INFO] tweaked toml for git repo https://github.com/Simhyeon/r4d written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Simhyeon/r4d already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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] d1e5f8687a661aedb12da22e17fa03d3830fcad9da32150a2347494123aebf41
[INFO] running `Command { std: "docker" "start" "-a" "d1e5f8687a661aedb12da22e17fa03d3830fcad9da32150a2347494123aebf41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1e5f8687a661aedb12da22e17fa03d3830fcad9da32150a2347494123aebf41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1e5f8687a661aedb12da22e17fa03d3830fcad9da32150a2347494123aebf41", kill_on_drop: false }`
[INFO] [stdout] d1e5f8687a661aedb12da22e17fa03d3830fcad9da32150a2347494123aebf41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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] 9da54731e9e82ce4c4005f210ab3e23327a1c267cd6fad0b5f77800b35464fc9
[INFO] running `Command { std: "docker" "start" "-a" "9da54731e9e82ce4c4005f210ab3e23327a1c267cd6fad0b5f77800b35464fc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking evalexpr v6.4.0
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking lipsum v0.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking r4d v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cli::Cli`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use cli::Cli;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cli::Cli`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use cli::Cli;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_path`
[INFO] [stdout]    --> src/basic.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |             let file_path = args[0];
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/cli.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |         if let Some(files) = args.values_of("FILE") {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_path`
[INFO] [stdout]    --> src/basic.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |             let file_path = args[0];
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/cli.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |         if let Some(files) = args.values_of("FILE") {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `include`
[INFO] [stdout]    --> src/basic.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn include(args: &str) -> Result<String, RadError> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Cli`
[INFO] [stdout]  --> src/cli.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Cli{}
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]   --> src/cli.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn parse() -> Result<(), RadError>{
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_options`
[INFO] [stdout]   --> src/cli.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn parse_options(args: &clap::ArgMatches) -> Result<(), RadError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_subcommands`
[INFO] [stdout]   --> src/cli.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn parse_subcommands(args: &clap::ArgMatches) -> Result<(), RadError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `args_builder`
[INFO] [stdout]   --> src/cli.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn args_builder() -> clap::ArgMatches {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `subcommand_direct`
[INFO] [stdout]   --> src/cli.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn subcommand_direct(matches: &clap::ArgMatches) -> Result<(), RadError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Reader`
[INFO] [stdout]  --> src/fileio.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Reader; 
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_stream`
[INFO] [stdout]  --> src/fileio.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn read_stream() {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_previous`
[INFO] [stdout]    --> src/processor.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn get_previous(&self) -> Option<char> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `args_to_vec`
[INFO] [stdout]  --> src/utils.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) fn args_to_vec<'a>(args : &'a str) -> Vec<&'a str> {
[INFO] [stdout]   |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/models.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(name: &str, args: &str, body: &str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register`
[INFO] [stdout]   --> src/models.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn register(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Processor::new().from_stdin();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `include`
[INFO] [stdout]    --> src/basic.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn include(args: &str) -> Result<String, RadError> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Cli`
[INFO] [stdout]  --> src/cli.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Cli{}
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]   --> src/cli.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn parse() -> Result<(), RadError>{
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_options`
[INFO] [stdout]   --> src/cli.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn parse_options(args: &clap::ArgMatches) -> Result<(), RadError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_subcommands`
[INFO] [stdout]   --> src/cli.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn parse_subcommands(args: &clap::ArgMatches) -> Result<(), RadError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `args_builder`
[INFO] [stdout]   --> src/cli.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn args_builder() -> clap::ArgMatches {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `subcommand_direct`
[INFO] [stdout]   --> src/cli.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn subcommand_direct(matches: &clap::ArgMatches) -> Result<(), RadError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Reader`
[INFO] [stdout]  --> src/fileio.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Reader; 
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_stream`
[INFO] [stdout]  --> src/fileio.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn read_stream() {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_previous`
[INFO] [stdout]    --> src/processor.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn get_previous(&self) -> Option<char> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `args_to_vec`
[INFO] [stdout]  --> src/utils.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) fn args_to_vec<'a>(args : &'a str) -> Vec<&'a str> {
[INFO] [stdout]   |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/models.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(name: &str, args: &str, body: &str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register`
[INFO] [stdout]   --> src/models.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn register(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Processor::new().from_stdin();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.41s
[INFO] running `Command { std: "docker" "inspect" "9da54731e9e82ce4c4005f210ab3e23327a1c267cd6fad0b5f77800b35464fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9da54731e9e82ce4c4005f210ab3e23327a1c267cd6fad0b5f77800b35464fc9", kill_on_drop: false }`
[INFO] [stdout] 9da54731e9e82ce4c4005f210ab3e23327a1c267cd6fad0b5f77800b35464fc9