[INFO] cloning repository https://github.com/CerulanLumina/whereisclass
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CerulanLumina/whereisclass" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCerulanLumina%2Fwhereisclass", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCerulanLumina%2Fwhereisclass'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a986dcd2048cb913b0e1e45c968888650d88931c
[INFO] testing CerulanLumina/whereisclass against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCerulanLumina%2Fwhereisclass" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CerulanLumina/whereisclass on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CerulanLumina/whereisclass
[INFO] finished tweaking git repo https://github.com/CerulanLumina/whereisclass
[INFO] tweaked toml for git repo https://github.com/CerulanLumina/whereisclass written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/CerulanLumina/whereisclass already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31d2022ce5d811665e119028e5de322725dd30875ba6243d3f14961edfe732d2
[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" "31d2022ce5d811665e119028e5de322725dd30875ba6243d3f14961edfe732d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31d2022ce5d811665e119028e5de322725dd30875ba6243d3f14961edfe732d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31d2022ce5d811665e119028e5de322725dd30875ba6243d3f14961edfe732d2", kill_on_drop: false }`
[INFO] [stdout] 31d2022ce5d811665e119028e5de322725dd30875ba6243d3f14961edfe732d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0205b7bbfa64052ca220a8d6b682c4d756b4c1e7dea28cea83afab9834255127
[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" "0205b7bbfa64052ca220a8d6b682c4d756b4c1e7dea28cea83afab9834255127", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]    Compiling siphasher v0.3.1
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling thin-slice v0.1.1
[INFO] [stderr]    Compiling xmlparser v0.10.0
[INFO] [stderr]    Compiling ego-tree v0.6.2
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling bimap v0.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling dtoa-short v0.3.2
[INFO] [stderr]    Compiling lock_api v0.3.3
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.7.0
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling phf_shared v0.8.0
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling rand v0.6.5
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[INFO] [stderr]    Compiling parking_lot v0.10.0
[INFO] [stderr]    Compiling tokio v0.2.13
[INFO] [stderr]    Compiling rand v0.7.3
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[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]    Compiling postgres-protocol v0.5.0
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling postgres-types v0.1.1
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling tokio-util v0.3.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling cssparser v0.25.9
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling tokio-postgres v0.5.3
[INFO] [stderr]    Compiling postgres v0.17.2
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]    Compiling scraper v0.11.0
[INFO] [stderr]    Compiling whereisclass v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]    --> src/xml_parser.rs:209:24
[INFO] [stdout]     |
[INFO] [stdout] 209 | impl From<std::option::NoneError> for CourseDBError {
[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/xml_parser.rs:210:29
[INFO] [stdout]     |
[INFO] [stdout] 210 |     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/xml_parser.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 10 | / fn parse_day(day: Node) -> Result<models::Day, CourseDBError> {
[INFO] [stdout] 11 | |     let day = day.text()?.into();
[INFO] [stdout]    | |                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Day, CourseDBError>`
[INFO] [stdout] 12 | |     Ok(day)
[INFO] [stdout] 13 | | }
[INFO] [stdout]    | |_- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Day, CourseDBError>`
[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/xml_parser.rs:17:52
[INFO] [stdout]    |
[INFO] [stdout] 15 | / fn parse_period(period_node: Node, strict: bool) -> Result<models::Period, CourseDBError> {
[INFO] [stdout] 16 | |     let time_regex = regex::Regex::new(r#"^\d+$"#).unwrap();
[INFO] [stdout] 17 | |     let time_start = period_node.attribute("start")?;
[INFO] [stdout]    | |                                                    ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Period, CourseDBError>`
[INFO] [stdout] 18 | |     let time_end = period_node.attribute("end")?;
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     Ok(period)
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Period, CourseDBError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]   --> src/xml_parser.rs:18:48
[INFO] [stdout]    |
[INFO] [stdout] 15 | / fn parse_period(period_node: Node, strict: bool) -> Result<models::Period, CourseDBError> {
[INFO] [stdout] 16 | |     let time_regex = regex::Regex::new(r#"^\d+$"#).unwrap();
[INFO] [stdout] 17 | |     let time_start = period_node.attribute("start")?;
[INFO] [stdout] 18 | |     let time_end = period_node.attribute("end")?;
[INFO] [stdout]    | |                                                ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Period, CourseDBError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     Ok(period)
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Period, CourseDBError>`
[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/xml_parser.rs:30:57
[INFO] [stdout]    |
[INFO] [stdout] 15 | / fn parse_period(period_node: Node, strict: bool) -> Result<models::Period, CourseDBError> {
[INFO] [stdout] 16 | |     let time_regex = regex::Regex::new(r#"^\d+$"#).unwrap();
[INFO] [stdout] 17 | |     let time_start = period_node.attribute("start")?;
[INFO] [stdout] 18 | |     let time_end = period_node.attribute("end")?;
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |     let instructor = period_node.attribute("instructor")?.to_string();
[INFO] [stdout]    | |                                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Period, CourseDBError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     Ok(period)
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Period, CourseDBError>`
[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/xml_parser.rs:64:27
[INFO] [stdout]    |
[INFO] [stdout] 63 | / fn parse_note(note: Node) -> Result<String, CourseDBError> {
[INFO] [stdout] 64 | |     let note = note.text()?.to_string();
[INFO] [stdout]    | |                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::string::String, CourseDBError>`
[INFO] [stdout] 65 | |     Ok(note)
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::string::String, CourseDBError>`
[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/xml_parser.rs:69:44
[INFO] [stdout]     |
[INFO] [stdout] 68  | / fn parse_section(section_node: Node, strict: bool) -> Result<models::Section, CourseDBError> {
[INFO] [stdout] 69  | |     let crn = section_node.attribute("crn")?;
[INFO] [stdout]     | |                                            ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Section, CourseDBError>`
[INFO] [stdout] 70  | |     let crn = u32::from_str(crn)?;
[INFO] [stdout] 71  | |     let num = section_node.attribute("num")?;
[INFO] [stdout] ...   |
[INFO] [stdout] 120 | |     Ok(section)
[INFO] [stdout] 121 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Section, CourseDBError>`
[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/xml_parser.rs:71:44
[INFO] [stdout]     |
[INFO] [stdout] 68  | / fn parse_section(section_node: Node, strict: bool) -> Result<models::Section, CourseDBError> {
[INFO] [stdout] 69  | |     let crn = section_node.attribute("crn")?;
[INFO] [stdout] 70  | |     let crn = u32::from_str(crn)?;
[INFO] [stdout] 71  | |     let num = section_node.attribute("num")?;
[INFO] [stdout]     | |                                            ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Section, CourseDBError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 120 | |     Ok(section)
[INFO] [stdout] 121 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Section, CourseDBError>`
[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/xml_parser.rs:125:45
[INFO] [stdout]     |
[INFO] [stdout] 124 | / fn parse_course(course_node: Node, strict: bool) -> Result<models::Course, CourseDBError> {
[INFO] [stdout] 125 | |     let name = course_node.attribute("name")?.to_string();
[INFO] [stdout]     | |                                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Course, CourseDBError>`
[INFO] [stdout] 126 | |     let dept = course_node.attribute("dept")?.to_string();
[INFO] [stdout] 127 | |     let num = course_node.attribute("num")?;
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     Ok(course)
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Course, CourseDBError>`
[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/xml_parser.rs:126:45
[INFO] [stdout]     |
[INFO] [stdout] 124 | / fn parse_course(course_node: Node, strict: bool) -> Result<models::Course, CourseDBError> {
[INFO] [stdout] 125 | |     let name = course_node.attribute("name")?.to_string();
[INFO] [stdout] 126 | |     let dept = course_node.attribute("dept")?.to_string();
[INFO] [stdout]     | |                                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Course, CourseDBError>`
[INFO] [stdout] 127 | |     let num = course_node.attribute("num")?;
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     Ok(course)
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Course, CourseDBError>`
[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/xml_parser.rs:127:43
[INFO] [stdout]     |
[INFO] [stdout] 124 | / fn parse_course(course_node: Node, strict: bool) -> Result<models::Course, CourseDBError> {
[INFO] [stdout] 125 | |     let name = course_node.attribute("name")?.to_string();
[INFO] [stdout] 126 | |     let dept = course_node.attribute("dept")?.to_string();
[INFO] [stdout] 127 | |     let num = course_node.attribute("num")?;
[INFO] [stdout]     | |                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<models::Course, CourseDBError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     Ok(course)
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<models::Course, CourseDBError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 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: could not compile `whereisclass`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0205b7bbfa64052ca220a8d6b682c4d756b4c1e7dea28cea83afab9834255127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0205b7bbfa64052ca220a8d6b682c4d756b4c1e7dea28cea83afab9834255127", kill_on_drop: false }`
[INFO] [stdout] 0205b7bbfa64052ca220a8d6b682c4d756b4c1e7dea28cea83afab9834255127
