[INFO] updating cached repository https://github.com/fourohfour/richter
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/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] 7b65468e4f61141898cd67005b1f2ac5eb5b2002
[INFO] checking fourohfour/richter against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffourohfour%2Frichter" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fourohfour/richter on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fourohfour/richter
[INFO] finished tweaking git repo https://github.com/fourohfour/richter
[INFO] tweaked toml for git repo https://github.com/fourohfour/richter written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/fourohfour/richter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 61b8ac903d654ae8ccd08d63d4fe1258f9a59aabba173779120407de607e1d44
[INFO] running `"docker" "start" "-a" "61b8ac903d654ae8ccd08d63d4fe1258f9a59aabba173779120407de607e1d44"`
[INFO] [stderr]     Checking hyper-native-tls v0.2.2
[INFO] [stderr]     Checking reqwest v0.4.0
[INFO] [stderr]     Checking richter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `YamlEmitter`
[INFO] [stderr]  --> src/enroll.rs:8:35
[INFO] [stderr]   |
[INFO] [stderr] 8 | use self::yaml_rust::{YamlLoader, YamlEmitter, Yaml};
[INFO] [stderr]   |                                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `calendar`
[INFO] [stderr]   --> src/enroll.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use calendar;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut home = env::home_dir().expect("No Home Dir!");
[INFO] [stderr]    |                    ^^^^^^^^^^^^^
[INFO] [stderr] warning: unused import: `YamlEmitter`
[INFO] [stderr]  --> src/enroll.rs:8:35
[INFO] [stderr]   |
[INFO] [stderr] 8 | use self::yaml_rust::{YamlLoader, YamlEmitter, Yaml};
[INFO] [stderr]   |                                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `calendar`
[INFO] [stderr]   --> src/enroll.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use calendar;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:34:20
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut home = env::home_dir().expect("No Home Dir!");
[INFO] [stderr]    |                    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut home = env::home_dir().expect("No Home Dir!");
[INFO] [stderr]    |                    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:34:20
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut home = env::home_dir().expect("No Home Dir!");
[INFO] [stderr]    |                    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `command`
[INFO] [stderr]   --> src/main.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn pull_command(command: &command::Command) {
[INFO] [stderr]    |                 ^^^^^^^ help: consider prefixing with an underscore: `_command`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field`
[INFO] [stderr]   --> src/interface.rs:36:49
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn get_optional_string_field(json: &json::Json, field: &str, activity: &str, field_name: &str) -> String {
[INFO] [stderr]    |                                                 ^^^^^ help: consider prefixing with an underscore: `_field`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `activity`
[INFO] [stderr]   --> src/interface.rs:36:62
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn get_optional_string_field(json: &json::Json, field: &str, activity: &str, field_name: &str) -> String {
[INFO] [stderr]    |                                                              ^^^^^^^^ help: consider prefixing with an underscore: `_activity`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field_name`
[INFO] [stderr]   --> src/interface.rs:36:78
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn get_optional_string_field(json: &json::Json, field: &str, activity: &str, field_name: &str) -> String {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^ help: consider prefixing with an underscore: `_field_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `command`
[INFO] [stderr]   --> src/main.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn pull_command(command: &command::Command) {
[INFO] [stderr]    |                 ^^^^^^^ help: consider prefixing with an underscore: `_command`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field`
[INFO] [stderr]   --> src/interface.rs:36:49
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn get_optional_string_field(json: &json::Json, field: &str, activity: &str, field_name: &str) -> String {
[INFO] [stderr]    |                                                 ^^^^^ help: consider prefixing with an underscore: `_field`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `activity`
[INFO] [stderr]   --> src/interface.rs:36:62
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn get_optional_string_field(json: &json::Json, field: &str, activity: &str, field_name: &str) -> String {
[INFO] [stderr]    |                                                              ^^^^^^^^ help: consider prefixing with an underscore: `_activity`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field_name`
[INFO] [stderr]   --> src/interface.rs:36:78
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn get_optional_string_field(json: &json::Json, field: &str, activity: &str, field_name: &str) -> String {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^ help: consider prefixing with an underscore: `_field_name`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load`
[INFO] [stderr]    --> src/calendar.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn load(mut file : File) -> Result<Option<Cache>, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `path`
[INFO] [stderr]    --> src/calendar.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     path          : String                        ,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `enrollments`
[INFO] [stderr]    --> src/calendar.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     enrollments   : Vec<enroll::Enrollment>       ,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cache`
[INFO] [stderr]    --> src/calendar.rs:178:5
[INFO] [stderr]     |
[INFO] [stderr] 178 |     cache         : Option<Cache>                 ,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `file_cache`
[INFO] [stderr]    --> src/calendar.rs:203:5
[INFO] [stderr]     |
[INFO] [stderr] 203 |     fn file_cache(path : &PathBuf) -> Result<Option<Cache>, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_any_cache`
[INFO] [stderr]    --> src/calendar.rs:235:5
[INFO] [stderr]     |
[INFO] [stderr] 235 |     fn load_any_cache(path: &PathBuf, enrollments: &Vec<enroll::Enrollment>) -> Result<Cache, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load`
[INFO] [stderr]    --> src/calendar.rs:250:5
[INFO] [stderr]     |
[INFO] [stderr] 250 |     pub fn load(path: &PathBuf) -> Result<Calendar, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_subdomain`
[INFO] [stderr]   --> src/enroll.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn get_subdomain<'a>(&'a self) -> &'a str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_school_id`
[INFO] [stderr]   --> src/enroll.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn get_school_id<'a>(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_class`
[INFO] [stderr]   --> src/enroll.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn get_class<'a>(&'a self) -> &'a str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]   --> src/output.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn error(&self) -> ! {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_calendar`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn get_calendar() -> calendar::Calendar {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/calendar.rs:210:27
[INFO] [stderr]     |
[INFO] [stderr] 210 |                           fs::remove_file(path);
[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: method is never used: `load`
[INFO] [stderr]    --> src/calendar.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn load(mut file : File) -> Result<Option<Cache>, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `path`
[INFO] [stderr]    --> src/calendar.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     path          : String                        ,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `enrollments`
[INFO] [stderr]    --> src/calendar.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     enrollments   : Vec<enroll::Enrollment>       ,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cache`
[INFO] [stderr]    --> src/calendar.rs:178:5
[INFO] [stderr]     |
[INFO] [stderr] 178 |     cache         : Option<Cache>                 ,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `file_cache`
[INFO] [stderr]    --> src/calendar.rs:203:5
[INFO] [stderr]     |
[INFO] [stderr] 203 |     fn file_cache(path : &PathBuf) -> Result<Option<Cache>, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_any_cache`
[INFO] [stderr]    --> src/calendar.rs:235:5
[INFO] [stderr]     |
[INFO] [stderr] 235 |     fn load_any_cache(path: &PathBuf, enrollments: &Vec<enroll::Enrollment>) -> Result<Cache, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load`
[INFO] [stderr]    --> src/calendar.rs:250:5
[INFO] [stderr]     |
[INFO] [stderr] 250 |     pub fn load(path: &PathBuf) -> Result<Calendar, output::Message> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_subdomain`
[INFO] [stderr]   --> src/enroll.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn get_subdomain<'a>(&'a self) -> &'a str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_school_id`
[INFO] [stderr]   --> src/enroll.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn get_school_id<'a>(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_class`
[INFO] [stderr]   --> src/enroll.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn get_class<'a>(&'a self) -> &'a str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]   --> src/output.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn error(&self) -> ! {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_calendar`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn get_calendar() -> calendar::Calendar {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/calendar.rs:210:27
[INFO] [stderr]     |
[INFO] [stderr] 210 |                           fs::remove_file(path);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 9.31s
[INFO] running `"docker" "inspect" "61b8ac903d654ae8ccd08d63d4fe1258f9a59aabba173779120407de607e1d44"`
[INFO] running `"docker" "rm" "-f" "61b8ac903d654ae8ccd08d63d4fe1258f9a59aabba173779120407de607e1d44"`
[INFO] [stdout] 61b8ac903d654ae8ccd08d63d4fe1258f9a59aabba173779120407de607e1d44