[INFO] fetching crate rsmycqu 0.2.1...
[INFO] checking rsmycqu-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rsmycqu 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rsmycqu 0.2.1
[INFO] finished tweaking crates.io crate rsmycqu 0.2.1
[INFO] tweaked toml for crates.io crate rsmycqu 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsmycqu 0.2.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rsmycqu 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a362f98dde134b6fb48ce249f2412e60ae2118e3c7609f8e4ec7622cbf465f5b
[INFO] running `Command { std: "docker" "start" "-a" "a362f98dde134b6fb48ce249f2412e60ae2118e3c7609f8e4ec7622cbf465f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a362f98dde134b6fb48ce249f2412e60ae2118e3c7609f8e4ec7622cbf465f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a362f98dde134b6fb48ce249f2412e60ae2118e3c7609f8e4ec7622cbf465f5b", kill_on_drop: false }`
[INFO] [stdout] a362f98dde134b6fb48ce249f2412e60ae2118e3c7609f8e4ec7622cbf465f5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8645f6eed8f9adee2a52902e40228f71e3f849c1cf993c05e90b3ca25e6be2c9
[INFO] running `Command { std: "docker" "start" "-a" "8645f6eed8f9adee2a52902e40228f71e3f849c1cf993c05e90b3ca25e6be2c9", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling syn v2.0.107
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling openssl-sys v0.9.110
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling openssl v0.10.74
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking deranged v0.5.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling cookie v0.18.1
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]     Checking time v0.3.44
[INFO] [stderr]    Compiling rstest_macros v0.26.1
[INFO] [stderr]     Checking generic-array v0.14.9
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]     Checking block-padding v0.3.3
[INFO] [stderr]     Checking inout v0.1.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling phf_generator v0.10.0
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[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking hybrid-array v0.4.5
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[INFO] [stderr]     Checking block-padding v0.4.1
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[INFO] [stderr]     Checking crypto v0.5.1
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[INFO] [stderr]    Compiling displaydoc v0.2.5
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[INFO] [stderr]    Compiling tokio-macros v2.6.0
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[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]     Checking snafu v0.8.9
[INFO] [stderr]    Compiling serde_with_macros v3.15.0
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking icu_normalizer v2.0.0
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[INFO] [stderr]     Checking serde_with v3.15.0
[INFO] [stderr]     Checking rstest v0.26.1
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[INFO] [stderr]     Checking tokio-util v0.7.16
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
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[INFO] [stderr]     Checking h2 v0.4.12
[INFO] [stderr]     Checking xml5ever v0.17.0
[INFO] [stderr]     Checking cookie_store v0.21.1
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[INFO] [stderr]     Checking select v0.6.1
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[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.24
[INFO] [stderr]     Checking rsmycqu v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/mycqu/course/course.rs:76:1
[INFO] [stdout]    |
[INFO] [stdout] 76 | / serde_with::serde_conv!(
[INFO] [stdout] 77 | |     InstructorVec,
[INFO] [stdout] 78 | |     String,
[INFO] [stdout] 79 | |     |name: &String| [name.clone()],
[INFO] [stdout] 80 | |     |value: Vec<String>| -> Result<_, std::convert::Infallible> { Ok(value.join(",")) }
[INFO] [stdout] 81 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::serde_conv` which comes from the expansion of the macro `serde_with::serde_conv` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/mycqu/course/course.rs:80:65
[INFO] [stdout]    |
[INFO] [stdout] 80 |     |value: Vec<String>| -> Result<_, std::convert::Infallible> { Ok(value.join(",")) }
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/mycqu/course/course.rs:80:67
[INFO] [stdout]    |
[INFO] [stdout] 80 |     |value: Vec<String>| -> Result<_, std::convert::Infallible> { Ok(value.join(",")) }
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<enroll_course_timetable::EnrollCourseTimetable>, Infallible>
[INFO] [stdout]   --> src/mycqu/enroll/enroll_course_timetable.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / serde_conv!(
[INFO] [stdout] 25 | |     pub(crate) EnrollCourseTimetableHelper,
[INFO] [stdout] 26 | |     Vec<EnrollCourseTimetable>,
[INFO] [stdout] 27 | |     |timetable: &Vec<EnrollCourseTimetable>| {
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `serde_conv` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<enroll_course_timetable::EnrollCourseTimetable>, Infallible>
[INFO] [stdout]   --> src/mycqu/enroll/enroll_course_timetable.rs:56:62
[INFO] [stdout]    |
[INFO] [stdout] 56 |       |timetable: &str| -> Result<_, std::convert::Infallible> {
[INFO] [stdout]    |  ______________________________________________________________^
[INFO] [stdout] 57 | |         Ok(EnrollCourseTimetable::parse_timetable_str(timetable))
[INFO] [stdout] 58 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<enroll_course_timetable::EnrollCourseTimetable>, Infallible>
[INFO] [stdout]   --> src/mycqu/enroll/enroll_course_timetable.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         Ok(EnrollCourseTimetable::parse_timetable_str(timetable))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsmycqu` (lib) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/mycqu/course/course.rs:76:1
[INFO] [stdout]    |
[INFO] [stdout] 76 | / serde_with::serde_conv!(
[INFO] [stdout] 77 | |     InstructorVec,
[INFO] [stdout] 78 | |     String,
[INFO] [stdout] 79 | |     |name: &String| [name.clone()],
[INFO] [stdout] 80 | |     |value: Vec<String>| -> Result<_, std::convert::Infallible> { Ok(value.join(",")) }
[INFO] [stdout] 81 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::serde_conv` which comes from the expansion of the macro `serde_with::serde_conv` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/mycqu/course/course.rs:80:65
[INFO] [stdout]    |
[INFO] [stdout] 80 |     |value: Vec<String>| -> Result<_, std::convert::Infallible> { Ok(value.join(",")) }
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/mycqu/course/course.rs:80:67
[INFO] [stdout]    |
[INFO] [stdout] 80 |     |value: Vec<String>| -> Result<_, std::convert::Infallible> { Ok(value.join(",")) }
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<enroll_course_timetable::EnrollCourseTimetable>, Infallible>
[INFO] [stdout]   --> src/mycqu/enroll/enroll_course_timetable.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / serde_conv!(
[INFO] [stdout] 25 | |     pub(crate) EnrollCourseTimetableHelper,
[INFO] [stdout] 26 | |     Vec<EnrollCourseTimetable>,
[INFO] [stdout] 27 | |     |timetable: &Vec<EnrollCourseTimetable>| {
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `serde_conv` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<enroll_course_timetable::EnrollCourseTimetable>, Infallible>
[INFO] [stdout]   --> src/mycqu/enroll/enroll_course_timetable.rs:56:62
[INFO] [stdout]    |
[INFO] [stdout] 56 |       |timetable: &str| -> Result<_, std::convert::Infallible> {
[INFO] [stdout]    |  ______________________________________________________________^
[INFO] [stdout] 57 | |         Ok(EnrollCourseTimetable::parse_timetable_str(timetable))
[INFO] [stdout] 58 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<enroll_course_timetable::EnrollCourseTimetable>, Infallible>
[INFO] [stdout]   --> src/mycqu/enroll/enroll_course_timetable.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         Ok(EnrollCourseTimetable::parse_timetable_str(timetable))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsmycqu` (lib test) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "8645f6eed8f9adee2a52902e40228f71e3f849c1cf993c05e90b3ca25e6be2c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8645f6eed8f9adee2a52902e40228f71e3f849c1cf993c05e90b3ca25e6be2c9", kill_on_drop: false }`
[INFO] [stdout] 8645f6eed8f9adee2a52902e40228f71e3f849c1cf993c05e90b3ca25e6be2c9
