[INFO] updating cached repository ajmwagar/edu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ajmwagar/edu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ajmwagar/edu" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ajmwagar/edu"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ajmwagar/edu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ajmwagar/edu" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ajmwagar/edu"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ajmwagar/edu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9cd292f5a977de605cdf2ee017905b4037a011d7
[INFO] sha for GitHub repo ajmwagar/edu: 9cd292f5a977de605cdf2ee017905b4037a011d7
[INFO] validating manifest of ajmwagar/edu on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ajmwagar/edu on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ajmwagar/edu
[INFO] finished frobbing ajmwagar/edu
[INFO] frobbed toml for ajmwagar/edu written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ajmwagar/edu/Cargo.toml
[INFO] started frobbing ajmwagar/edu
[INFO] finished frobbing ajmwagar/edu
[INFO] frobbed toml for ajmwagar/edu written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ajmwagar/edu/Cargo.toml
[INFO] crate ajmwagar/edu already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ajmwagar/edu against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-1/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ajmwagar/edu:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 256688251a79a70b5620044f22f8c84a1fb9d099965ab61e8a978a86aafc0a84
[INFO] running `"docker" "start" "-a" "256688251a79a70b5620044f22f8c84a1fb9d099965ab61e8a978a86aafc0a84"`
[INFO] [stderr]     Checking edu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `asg`
[INFO] [stderr]   --> src/lib.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |   pub fn new_assignment(asg: &Assignment) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                         ^^^ help: consider prefixing with an underscore: `_asg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `asg`
[INFO] [stderr]   --> src/lib.rs:34:26
[INFO] [stderr]    |
[INFO] [stderr] 34 |   pub fn open_assignment(asg: &Assignment) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                          ^^^ help: consider prefixing with an underscore: `_asg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class`
[INFO] [stderr]   --> src/lib.rs:39:26
[INFO] [stderr]    |
[INFO] [stderr] 39 |   pub fn build_directory(class: &Class) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                          ^^^^^ help: consider prefixing with an underscore: `_class`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `asg`
[INFO] [stderr]   --> src/lib.rs:44:27
[INFO] [stderr]    |
[INFO] [stderr] 44 |   pub fn build_assignment(asg: &Assignment) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                           ^^^ help: consider prefixing with an underscore: `_asg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `asg`
[INFO] [stderr]   --> src/lib.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |   pub fn new_assignment(asg: &Assignment) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                         ^^^ help: consider prefixing with an underscore: `_asg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `asg`
[INFO] [stderr]   --> src/lib.rs:34:26
[INFO] [stderr]    |
[INFO] [stderr] 34 |   pub fn open_assignment(asg: &Assignment) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                          ^^^ help: consider prefixing with an underscore: `_asg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class`
[INFO] [stderr]   --> src/lib.rs:39:26
[INFO] [stderr]    |
[INFO] [stderr] 39 |   pub fn build_directory(class: &Class) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                          ^^^^^ help: consider prefixing with an underscore: `_class`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `asg`
[INFO] [stderr]   --> src/lib.rs:44:27
[INFO] [stderr]    |
[INFO] [stderr] 44 |   pub fn build_assignment(asg: &Assignment) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                           ^^^ help: consider prefixing with an underscore: `_asg`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `Classes` should have a snake case name
[INFO] [stderr]   --> src/lib.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         pub Classes: Vec<Class>
[INFO] [stderr]    |             ^^^^^^^ help: convert the identifier to snake case: `classes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `Classes` should have a snake case name
[INFO] [stderr]   --> src/lib.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         pub Classes: Vec<Class>
[INFO] [stderr]    |             ^^^^^^^ help: convert the identifier to snake case: `classes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `edu::conf::*`
[INFO] [stderr]    --> tests/unit.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 | use edu::conf::*;
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `edu::prelude::*`
[INFO] [stderr]  --> src/main.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 |   use edu::prelude::*;
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `edu::prelude::*`
[INFO] [stderr]  --> src/main.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 |   use edu::prelude::*;
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |   else if let Some(matches) = matches.subcommand_matches("archive") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |   else if let Some(matches) = matches.subcommand_matches("unarchive") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:92:20
[INFO] [stderr]    |
[INFO] [stderr] 92 |   else if let Some(matches) = matches.subcommand_matches("finish") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:99:20
[INFO] [stderr]    |
[INFO] [stderr] 99 |   else if let Some(matches) = matches.subcommand_matches("unfinish") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]    --> src/main.rs:106:20
[INFO] [stderr]     |
[INFO] [stderr] 106 |   else if let Some(matches) = matches.subcommand_matches("open") {
[INFO] [stderr]     |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]    --> src/main.rs:113:20
[INFO] [stderr]     |
[INFO] [stderr] 113 |   else if let Some(matches) = matches.subcommand_matches("build") {
[INFO] [stderr]     |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]    --> src/main.rs:120:20
[INFO] [stderr]     |
[INFO] [stderr] 120 |   else if let Some(matches) = matches.subcommand_matches("config") {
[INFO] [stderr]     |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |   else if let Some(matches) = matches.subcommand_matches("archive") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |   else if let Some(matches) = matches.subcommand_matches("unarchive") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:92:20
[INFO] [stderr]    |
[INFO] [stderr] 92 |   else if let Some(matches) = matches.subcommand_matches("finish") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:99:20
[INFO] [stderr]    |
[INFO] [stderr] 99 |   else if let Some(matches) = matches.subcommand_matches("unfinish") {
[INFO] [stderr]    |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]    --> src/main.rs:106:20
[INFO] [stderr]     |
[INFO] [stderr] 106 |   else if let Some(matches) = matches.subcommand_matches("open") {
[INFO] [stderr]     |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]    --> src/main.rs:113:20
[INFO] [stderr]     |
[INFO] [stderr] 113 |   else if let Some(matches) = matches.subcommand_matches("build") {
[INFO] [stderr]     |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]    --> src/main.rs:120:20
[INFO] [stderr]     |
[INFO] [stderr] 120 |   else if let Some(matches) = matches.subcommand_matches("config") {
[INFO] [stderr]     |                    ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut asg = matches.value_of("ASG").unwrap();
[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/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut asg = matches.value_of("ASG").unwrap();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 6.34s
[INFO] running `"docker" "inspect" "256688251a79a70b5620044f22f8c84a1fb9d099965ab61e8a978a86aafc0a84"`
[INFO] running `"docker" "rm" "-f" "256688251a79a70b5620044f22f8c84a1fb9d099965ab61e8a978a86aafc0a84"`
[INFO] [stdout] 256688251a79a70b5620044f22f8c84a1fb9d099965ab61e8a978a86aafc0a84