[INFO] cloning repository https://github.com/driedtoast/rusties
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/driedtoast/rusties" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdriedtoast%2Frusties", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdriedtoast%2Frusties'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16ef489791be6d8b1d4cb68f9066579db82d0677
[INFO] checking driedtoast/rusties against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdriedtoast%2Frusties" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/driedtoast/rusties on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/driedtoast/rusties
[INFO] finished tweaking git repo https://github.com/driedtoast/rusties
[INFO] tweaked toml for git repo https://github.com/driedtoast/rusties written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/driedtoast/rusties already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded seahorse v1.0.0
[INFO] [stderr]   Downloaded fountain v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6457ed9a520eb8608b14a5378461cdc72f7564512e627b8c7ff5757005874bd
[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" "f6457ed9a520eb8608b14a5378461cdc72f7564512e627b8c7ff5757005874bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6457ed9a520eb8608b14a5378461cdc72f7564512e627b8c7ff5757005874bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6457ed9a520eb8608b14a5378461cdc72f7564512e627b8c7ff5757005874bd", kill_on_drop: false }`
[INFO] [stdout] f6457ed9a520eb8608b14a5378461cdc72f7564512e627b8c7ff5757005874bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18942886f43286a1e51322083da75586cb209566c48885dddb2cd5dfd0efb2df
[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" "18942886f43286a1e51322083da75586cb209566c48885dddb2cd5dfd0efb2df", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking seahorse v1.0.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking fountain v0.1.12
[INFO] [stderr]     Checking rusties v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `str_to_check` is never read
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |       str_to_check = substring(str_to_check, 0, n);      
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `str_to_check` is never read
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |       str_to_check = substring(str_to_check, 0, n);      
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hacker_rank_action`
[INFO] [stdout]  --> src/hacker_rank/command.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn hacker_rank_action(c: &Context) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `problem_not_found`
[INFO] [stdout]   --> src/hacker_rank/command.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn problem_not_found() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get`
[INFO] [stdout]   --> src/hacker_rank/command.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn get() -> Command {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cat_and_mouse_call`
[INFO] [stdout]  --> src/hacker_rank/cat_and_mouse.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn cat_and_mouse_call(cat_a: i32, cat_b: i32, mouse_c: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/hacker_rank/cat_and_mouse.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn run(args: &[String]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `repeated_string_call`
[INFO] [stdout]  --> src/hacker_rank/repeated_string.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn repeated_string_call(s: &String, n: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `str_length`
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn str_length(str_to_check: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn run(args: &[String]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `substring`
[INFO] [stdout]  --> src/hacker_rank/mod.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn substring(s: &str, start: usize, len: usize) -> &str {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hacker_rank_action`
[INFO] [stdout]  --> src/hacker_rank/command.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn hacker_rank_action(c: &Context) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `problem_not_found`
[INFO] [stdout]   --> src/hacker_rank/command.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn problem_not_found() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get`
[INFO] [stdout]   --> src/hacker_rank/command.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn get() -> Command {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cat_and_mouse_call`
[INFO] [stdout]  --> src/hacker_rank/cat_and_mouse.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn cat_and_mouse_call(cat_a: i32, cat_b: i32, mouse_c: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/hacker_rank/cat_and_mouse.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn run(args: &[String]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `repeated_string_call`
[INFO] [stdout]  --> src/hacker_rank/repeated_string.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn repeated_string_call(s: &String, n: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `str_length`
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn str_length(str_to_check: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn run(args: &[String]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `substring`
[INFO] [stdout]  --> src/hacker_rank/mod.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn substring(s: &str, start: usize, len: usize) -> &str {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ErrorKind`
[INFO] [stdout]  --> src/commands/screenplay.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::error::{ErrorKind, VerboseError};
[INFO] [stdout]   |                  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ErrorKind`
[INFO] [stdout]  --> src/commands/screenplay.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::error::{ErrorKind, VerboseError};
[INFO] [stdout]   |                  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `str_to_check` is never read
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |       str_to_check = substring(str_to_check, 0, n);      
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `str_to_check` is never read
[INFO] [stdout]   --> src/hacker_rank/repeated_string.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |       str_to_check = substring(str_to_check, 0, n);      
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.24s
[INFO] running `Command { std: "docker" "inspect" "18942886f43286a1e51322083da75586cb209566c48885dddb2cd5dfd0efb2df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18942886f43286a1e51322083da75586cb209566c48885dddb2cd5dfd0efb2df", kill_on_drop: false }`
[INFO] [stdout] 18942886f43286a1e51322083da75586cb209566c48885dddb2cd5dfd0efb2df