[INFO] cloning repository https://github.com/Scetch/uWindsorCourseSearchBot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Scetch/uWindsorCourseSearchBot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FScetch%2FuWindsorCourseSearchBot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FScetch%2FuWindsorCourseSearchBot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d2a34fa592fc9d6963eaec35d649fd9df9acfae
[INFO] checking Scetch/uWindsorCourseSearchBot against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FScetch%2FuWindsorCourseSearchBot" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Scetch/uWindsorCourseSearchBot on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Scetch/uWindsorCourseSearchBot
[INFO] finished tweaking git repo https://github.com/Scetch/uWindsorCourseSearchBot
[INFO] tweaked toml for git repo https://github.com/Scetch/uWindsorCourseSearchBot written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Scetch/uWindsorCourseSearchBot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hyper-tls v0.1.3
[INFO] [stderr]   Downloaded serde_urlencoded v0.5.2
[INFO] [stderr]   Downloaded utf-8 v0.7.2
[INFO] [stderr]   Downloaded phf v0.7.22
[INFO] [stderr]   Downloaded phf_generator v0.7.22
[INFO] [stderr]   Downloaded reqwest v0.8.6
[INFO] [stderr]   Downloaded httparse v1.3.2
[INFO] [stderr]   Downloaded libflate v0.1.16
[INFO] [stderr]   Downloaded mime v0.3.8
[INFO] [stderr]   Downloaded mime_guess v2.0.0-alpha.5
[INFO] [stderr]   Downloaded crunchy v0.1.6
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] [stderr]   Downloaded encoding_rs v0.7.2
[INFO] [stderr]   Downloaded mio v0.6.15
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.5
[INFO] [stderr]   Downloaded evzht9h3nznqzwl v0.0.3
[INFO] [stderr]   Downloaded hyper-native-tls v0.2.4
[INFO] [stderr]   Downloaded phf_shared v0.7.22
[INFO] [stderr]   Downloaded phf_codegen v0.7.22
[INFO] [stderr]   Downloaded schannel v0.1.13
[INFO] [stderr]   Downloaded atomicwrites v0.2.2
[INFO] [stderr]   Downloaded ascii v0.7.1
[INFO] [stderr]   Downloaded tinysegmenter v0.1.0
[INFO] [stderr]   Downloaded maplit v0.1.6
[INFO] [stderr]   Downloaded fst-regex v0.2.0
[INFO] [stderr]   Downloaded mime_guess v1.8.5
[INFO] [stderr]   Downloaded rental-impl v0.5.0
[INFO] [stderr]   Downloaded tokio-fs v0.1.2
[INFO] [stderr]   Downloaded stable_deref_trait v1.1.0
[INFO] [stderr]   Downloaded owned-read v0.1.0
[INFO] [stderr]   Downloaded census v0.1.1
[INFO] [stderr]   Downloaded smallvec v0.6.3
[INFO] [stderr]   Downloaded rental v0.5.1
[INFO] [stderr]   Downloaded flexi_logger v0.9.0
[INFO] [stderr]   Downloaded chan v0.1.21
[INFO] [stderr]   Downloaded markup5ever v0.3.2
[INFO] [stderr]   Downloaded bitpacking v0.5.1
[INFO] [stderr]   Downloaded select v0.4.2
[INFO] [stderr]   Downloaded tendril v0.3.1
[INFO] [stderr]   Downloaded combine v2.5.2
[INFO] [stderr]   Downloaded html5ever v0.18.0
[INFO] [stderr]   Downloaded futures v0.1.22
[INFO] [stderr]   Downloaded tantivy v0.6.1
[INFO] [stderr]   Downloaded serenity v0.5.4
[INFO] [stderr]   Downloaded fst v0.3.0
[INFO] [stderr]   Downloaded rust-stemmers v0.1.0
[INFO] [stderr]   Downloaded snap v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ba7c5f450d8dc38849cdc4a1bdd1eb22a9c111cbf655a61945ca1232f580279
[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" "0ba7c5f450d8dc38849cdc4a1bdd1eb22a9c111cbf655a61945ca1232f580279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ba7c5f450d8dc38849cdc4a1bdd1eb22a9c111cbf655a61945ca1232f580279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ba7c5f450d8dc38849cdc4a1bdd1eb22a9c111cbf655a61945ca1232f580279", kill_on_drop: false }`
[INFO] [stdout] 0ba7c5f450d8dc38849cdc4a1bdd1eb22a9c111cbf655a61945ca1232f580279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b187a464388a0dbc19867a12ac087700356571e5b064c5a4738c5f344161b19
[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" "4b187a464388a0dbc19867a12ac087700356571e5b064c5a4738c5f344161b19", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]     Checking futures v0.1.22
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.0
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking try-lock v0.1.0
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.2
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking rust-stemmers v0.1.0
[INFO] [stderr]     Checking downcast v0.9.2
[INFO] [stderr]     Checking census v0.1.1
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/downcast-0.9.2/src/lib.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn is_type(&self) -> bool { self.type_id() == TypeId::of::<T>() }
[INFO] [stdout]     |                                      ^^^^^^^ multiple `type_id` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `Any`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/downcast-0.9.2/src/lib.rs:29:5
[INFO] [stdout]     |
[INFO] [stdout] 29  |     fn type_id(&self) -> TypeId { TypeId::of::<Self>() }
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `std::any::Any`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn is_type(&self) -> bool { Any::type_id(&self) == TypeId::of::<T>() }
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn is_type(&self) -> bool { std::any::Any::type_id(&self) == TypeId::of::<T>() }
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `downcast`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4b187a464388a0dbc19867a12ac087700356571e5b064c5a4738c5f344161b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b187a464388a0dbc19867a12ac087700356571e5b064c5a4738c5f344161b19", kill_on_drop: false }`
[INFO] [stdout] 4b187a464388a0dbc19867a12ac087700356571e5b064c5a4738c5f344161b19