[INFO] updating cached repository https://github.com/Ryneqq/nova
[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] ab0659e548fa4435ccb1483048c0c779f63d3a51
[INFO] checking Ryneqq/nova against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyneqq%2Fnova" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ryneqq/nova 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/Ryneqq/nova
[INFO] finished tweaking git repo https://github.com/Ryneqq/nova
[INFO] tweaked toml for git repo https://github.com/Ryneqq/nova written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Ryneqq/nova already has a lockfile, it will not be regenerated
[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-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" "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] b5d215af67a064d245028bc8b1e18f7152768ba18b4cbd467ce20441447e39c9
[INFO] running `"docker" "start" "-a" "b5d215af67a064d245028bc8b1e18f7152768ba18b4cbd467ce20441447e39c9"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking nova v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/args.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `self`
[INFO] [stderr]  --> src/args.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, File};
[INFO] [stderr]   |               ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mode`
[INFO] [stderr]   --> src/main.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::{AppArgs, Mode};
[INFO] [stderr]    |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/args.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `self`
[INFO] [stderr]  --> src/args.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, File};
[INFO] [stderr]   |               ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mode`
[INFO] [stderr]   --> src/main.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::{AppArgs, Mode};
[INFO] [stderr]    |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/module/format_module.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut file = String::new();
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/module/format_module.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn load_file(path: &Path) -> String {
[INFO] [stderr]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/create.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut name = name.to_string();
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/module/format_module.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut file = String::new();
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_snake_case`
[INFO] [stderr]  --> src/create.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn to_snake_case(name: &str) -> String {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Enum`
[INFO] [stderr]  --> src/generate.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Enum(&'a str),
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MOD_RS`
[INFO] [stderr]  --> src/module/find_module.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const MOD_RS:   &str = "mod.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LIB_RS`
[INFO] [stderr]  --> src/module/find_module.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const LIB_RS:   &str = "lib.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAIN_RS`
[INFO] [stderr]  --> src/module/find_module.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const MAIN_RS:  &str = "main.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ModFinder`
[INFO] [stderr]  --> src/module/find_module.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct ModFinder {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/module/find_module.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new<P: AsRef<Path>>(path: P) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `verify_modules`
[INFO] [stderr]   --> src/module/find_module.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn verify_modules<P: AsRef<Path>>(path: P) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `verify_module`
[INFO] [stderr]   --> src/module/find_module.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn verify_module<P: AsRef<Path>>(path: P) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ends_with_module`
[INFO] [stderr]   --> src/module/find_module.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn ends_with_module<P: AsRef<Path>>(path: P) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MOD_RS`
[INFO] [stderr]  --> src/module/format_module.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | const MOD_RS:   &str = "mod.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LIB_RS`
[INFO] [stderr]  --> src/module/format_module.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const LIB_RS:   &str = "lib.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAIN_RS`
[INFO] [stderr]  --> src/module/format_module.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const MAIN_RS:  &str = "main.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ModFromatter`
[INFO] [stderr]  --> src/module/format_module.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct ModFromatter {
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/module/format_module.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new<P: AsRef<Path>>(path: P) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `format`
[INFO] [stderr]   --> src/module/format_module.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn format(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `commit`
[INFO] [stderr]   --> src/module/format_module.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn commit(self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_file`
[INFO] [stderr]   --> src/module/format_module.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn load_file(path: &Path) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `verify_file`
[INFO] [stderr]   --> src/module/format_module.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn verify_file(&self) -> Result<(),()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/module/format_module.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut file = String::new();
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/module/format_module.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn load_file(path: &Path) -> String {
[INFO] [stderr]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: 27 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/create.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut name = name.to_string();
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/module/format_module.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut file = String::new();
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Enum`
[INFO] [stderr]  --> src/generate.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Enum(&'a str),
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ModFinder`
[INFO] [stderr]  --> src/module/find_module.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct ModFinder {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/module/find_module.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new<P: AsRef<Path>>(path: P) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MOD_RS`
[INFO] [stderr]  --> src/module/format_module.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | const MOD_RS:   &str = "mod.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LIB_RS`
[INFO] [stderr]  --> src/module/format_module.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const LIB_RS:   &str = "lib.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAIN_RS`
[INFO] [stderr]  --> src/module/format_module.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const MAIN_RS:  &str = "main.rs";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ModFromatter`
[INFO] [stderr]  --> src/module/format_module.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct ModFromatter {
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/module/format_module.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new<P: AsRef<Path>>(path: P) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `format`
[INFO] [stderr]   --> src/module/format_module.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn format(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `commit`
[INFO] [stderr]   --> src/module/format_module.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn commit(self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_file`
[INFO] [stderr]   --> src/module/format_module.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn load_file(path: &Path) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `verify_file`
[INFO] [stderr]   --> src/module/format_module.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn verify_file(&self) -> Result<(),()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/module/find_module.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         File::create("./mod.rs");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/module/find_module.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         fs::remove_file("./mod.rs");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 22 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.27s
[INFO] running `"docker" "inspect" "b5d215af67a064d245028bc8b1e18f7152768ba18b4cbd467ce20441447e39c9"`
[INFO] running `"docker" "rm" "-f" "b5d215af67a064d245028bc8b1e18f7152768ba18b4cbd467ce20441447e39c9"`
[INFO] [stdout] b5d215af67a064d245028bc8b1e18f7152768ba18b4cbd467ce20441447e39c9