[INFO] fetching crate decide 0.1.1...
[INFO] checking decide-0.1.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate decide 0.1.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate decide 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate decide 0.1.1
[INFO] finished tweaking crates.io crate decide 0.1.1
[INFO] tweaked toml for crates.io crate decide 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate decide 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 4392a062addd3c49500ba23bcf38b06b6bb126fd676b686f4754b16748137134
[INFO] running `Command { std: "docker" "start" "-a" "4392a062addd3c49500ba23bcf38b06b6bb126fd676b686f4754b16748137134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4392a062addd3c49500ba23bcf38b06b6bb126fd676b686f4754b16748137134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4392a062addd3c49500ba23bcf38b06b6bb126fd676b686f4754b16748137134", kill_on_drop: false }`
[INFO] [stdout] 4392a062addd3c49500ba23bcf38b06b6bb126fd676b686f4754b16748137134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0c02e8f2b8f671684609ce480edaf0ba052eb01dcbb5d7fc6d78c4d700e25db
[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" "d0c02e8f2b8f671684609ce480edaf0ba052eb01dcbb5d7fc6d78c4d700e25db", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking cmd_lib v0.7.8
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking decide v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/error.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl From<std::option::NoneError> for Error {
[INFO] [stdout]    |                        ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/error.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn from(_: std::option::NoneError) -> Self {
[INFO] [stdout]    |                             ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/error.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl From<std::option::NoneError> for Error {
[INFO] [stdout]    |                        ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/error.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn from(_: std::option::NoneError) -> Self {
[INFO] [stdout]    |                             ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:9:57
[INFO] [stdout]     |
[INFO] [stdout] 8   | / pub fn edit(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 9   | |     let old_name = String::from(matches.value_of("name")?);
[INFO] [stdout]     | |                                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] 10  | |     storage.projects.iter_mut().for_each(|p| {
[INFO] [stdout] 11  | |         if p.name == old_name {
[INFO] [stdout] ...   |
[INFO] [stdout] 24  | |     Ok(())
[INFO] [stdout] 25  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:32:50
[INFO] [stdout]     |
[INFO] [stdout] 27  | / pub fn decide(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 28  | |     if storage.projects.is_empty() {
[INFO] [stdout] 29  | |         println!("you have nothing to work on :( / :)");
[INFO] [stdout] 30  | |     } else {
[INFO] [stdout] 31  | |         let index = rand::thread_rng().gen_range(0, storage.projects.len());
[INFO] [stdout] 32  | |         let project = storage.projects.get(index)?;
[INFO] [stdout]     | |                                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 47  | |     Ok(())
[INFO] [stdout] 48  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:51:61
[INFO] [stdout]     |
[INFO] [stdout] 50  | / pub fn new(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 51  | |     let project_name = String::from(matches.value_of("NAME")?);
[INFO] [stdout]     | |                                                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] 52  | |     if storage.projects.iter().any(|p| p.name == project_name) {
[INFO] [stdout] 53  | |         println!("the project {} already exists", project_name);
[INFO] [stdout] ...   |
[INFO] [stdout] 62  | |     Ok(())
[INFO] [stdout] 63  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:66:61
[INFO] [stdout]     |
[INFO] [stdout] 65  | / pub fn remove(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 66  | |     let project_name = String::from(matches.value_of("NAME")?);
[INFO] [stdout]     | |                                                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] 67  | |     let mut found = false;
[INFO] [stdout] 68  | |     storage.projects.retain(|x| {
[INFO] [stdout] ...   |
[INFO] [stdout] 79  | |     Ok(())
[INFO] [stdout] 80  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:9:57
[INFO] [stdout]     |
[INFO] [stdout] 8   | / pub fn edit(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 9   | |     let old_name = String::from(matches.value_of("name")?);
[INFO] [stdout]     | |                                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] 10  | |     storage.projects.iter_mut().for_each(|p| {
[INFO] [stdout] 11  | |         if p.name == old_name {
[INFO] [stdout] ...   |
[INFO] [stdout] 24  | |     Ok(())
[INFO] [stdout] 25  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:32:50
[INFO] [stdout]     |
[INFO] [stdout] 27  | / pub fn decide(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 28  | |     if storage.projects.is_empty() {
[INFO] [stdout] 29  | |         println!("you have nothing to work on :( / :)");
[INFO] [stdout] 30  | |     } else {
[INFO] [stdout] 31  | |         let index = rand::thread_rng().gen_range(0, storage.projects.len());
[INFO] [stdout] 32  | |         let project = storage.projects.get(index)?;
[INFO] [stdout]     | |                                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 47  | |     Ok(())
[INFO] [stdout] 48  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:51:61
[INFO] [stdout]     |
[INFO] [stdout] 50  | / pub fn new(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 51  | |     let project_name = String::from(matches.value_of("NAME")?);
[INFO] [stdout]     | |                                                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] 52  | |     if storage.projects.iter().any(|p| p.name == project_name) {
[INFO] [stdout] 53  | |         println!("the project {} already exists", project_name);
[INFO] [stdout] ...   |
[INFO] [stdout] 62  | |     Ok(())
[INFO] [stdout] 63  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `decide` due to 8 previous errors
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/commands.rs:66:61
[INFO] [stdout]     |
[INFO] [stdout] 65  | / pub fn remove(matches: &ArgMatches, storage: &mut Storage) -> Result<(), Error> {
[INFO] [stdout] 66  | |     let project_name = String::from(matches.value_of("NAME")?);
[INFO] [stdout]     | |                                                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] 67  | |     let mut found = false;
[INFO] [stdout] 68  | |     storage.projects.retain(|x| {
[INFO] [stdout] ...   |
[INFO] [stdout] 79  | |     Ok(())
[INFO] [stdout] 80  | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d0c02e8f2b8f671684609ce480edaf0ba052eb01dcbb5d7fc6d78c4d700e25db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0c02e8f2b8f671684609ce480edaf0ba052eb01dcbb5d7fc6d78c4d700e25db", kill_on_drop: false }`
[INFO] [stdout] d0c02e8f2b8f671684609ce480edaf0ba052eb01dcbb5d7fc6d78c4d700e25db
