[INFO] cloning repository https://github.com/JJJollyjim/serenity-build-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JJJollyjim/serenity-build-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJJJollyjim%2Fserenity-build-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJJJollyjim%2Fserenity-build-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33b0a54b0893682d8fc1cb9330fd6667f1634e81
[INFO] checking JJJollyjim/serenity-build-test against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJJJollyjim%2Fserenity-build-test" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JJJollyjim/serenity-build-test on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JJJollyjim/serenity-build-test
[INFO] finished tweaking git repo https://github.com/JJJollyjim/serenity-build-test
[INFO] tweaked toml for git repo https://github.com/JJJollyjim/serenity-build-test written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/JJJollyjim/serenity-build-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.53
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.53
[INFO] [stderr]   Downloaded synstructure v0.12.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.53
[INFO] [stderr]   Downloaded cc v1.0.46
[INFO] [stderr]   Downloaded url v2.1.0
[INFO] [stderr]   Downloaded js-sys v0.3.30
[INFO] [stderr]   Downloaded unicode-segmentation v1.4.0
[INFO] [stderr]   Downloaded input_buffer v0.2.0
[INFO] [stderr]   Downloaded rustls v0.16.0
[INFO] [stderr]   Downloaded filetime v0.2.7
[INFO] [stderr]   Downloaded tungstenite v0.9.1
[INFO] [stderr]   Downloaded tokio-executor v0.1.8
[INFO] [stderr]   Downloaded tokio-timer v0.2.11
[INFO] [stderr]   Downloaded tokio-tcp v0.1.3
[INFO] [stderr]   Downloaded tokio-io v0.1.12
[INFO] [stderr]   Downloaded indexmap v1.3.0
[INFO] [stderr]   Downloaded hyper-rustls v0.17.1
[INFO] [stderr]   Downloaded cexpr v0.3.5
[INFO] [stderr]   Downloaded audiopus v0.1.3
[INFO] [stderr]   Downloaded publicsuffix v1.5.3
[INFO] [stderr]   Downloaded tokio-current-thread v0.1.6
[INFO] [stderr]   Downloaded clang-sys v0.26.4
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.53
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[INFO] [stderr]   Downloaded http v0.1.19
[INFO] [stderr]   Downloaded hashbrown v0.1.8
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.53
[INFO] [stderr]   Downloaded block-padding v0.1.4
[INFO] [stderr]   Downloaded tokio-sync v0.1.7
[INFO] [stderr]   Downloaded tokio-rustls v0.10.2
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.16
[INFO] [stderr]   Downloaded reqwest v0.9.22
[INFO] [stderr]   Downloaded smallvec v0.6.11
[INFO] [stderr]   Downloaded encoding_rs v0.8.20
[INFO] [stderr]   Downloaded serde_json v1.0.41
[INFO] [stderr]   Downloaded tar v0.4.26
[INFO] [stderr]   Downloaded threadpool v1.7.1
[INFO] [stderr]   Downloaded libflate v0.1.27
[INFO] [stderr]   Downloaded sha-1 v0.8.1
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] [stderr]   Downloaded webpki v0.21.0
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.53
[INFO] [stderr]   Downloaded web-sys v0.3.30
[INFO] [stderr]   Downloaded bindgen v0.48.1
[INFO] [stderr]   Downloaded webpki-roots v0.17.0
[INFO] [stderr]   Downloaded libsodium-sys v0.2.5
[INFO] [stderr]   Downloaded serenity v0.7.2
[INFO] [stderr]   Downloaded sodiumoxide v0.2.5
[INFO] [stderr]   Downloaded flate2 v1.0.12
[INFO] [stderr]   Downloaded tokio-reactor v0.1.10
[INFO] [stderr]   Downloaded ring v0.16.9
[INFO] [stderr]   Downloaded audiopus_sys v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e40d85cfc2894530dbd322f480448ae384b62cf8bb7ab72e872f3067c90e782
[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" "5e40d85cfc2894530dbd322f480448ae384b62cf8bb7ab72e872f3067c90e782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e40d85cfc2894530dbd322f480448ae384b62cf8bb7ab72e872f3067c90e782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e40d85cfc2894530dbd322f480448ae384b62cf8bb7ab72e872f3067c90e782", kill_on_drop: false }`
[INFO] [stdout] 5e40d85cfc2894530dbd322f480448ae384b62cf8bb7ab72e872f3067c90e782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f595c842f4f21961d3afeda61fa9b73f10b0a9df4a2a89fec68b1fc41af1f2ec
[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" "f595c842f4f21961d3afeda61fa9b73f10b0a9df4a2a89fec68b1fc41af1f2ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking smallvec v0.6.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking untrusted v0.7.0
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling bindgen v0.48.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]    Compiling encoding_rs v0.8.20
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling serenity v0.7.2
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/try_from-0.3.2/src/char.rs:56:28
[INFO] [stdout]     |
[INFO] [stdout] 56  |                 match u32::try_from(n)? {
[INFO] [stdout]     |                            ^^^^^^^^ multiple `try_from` found
[INFO] [stdout] ...
[INFO] [stdout] 68  | impl_int_to_char!(i8, i16, i32, i64, isize, u16, u32, u64, usize);
[INFO] [stdout]     | ------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `TryFrom`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/try_from-0.3.2/src/lib.rs:21:5
[INFO] [stdout]     |
[INFO] [stdout] 21  |     fn try_from(T) -> Result<Self, Self::Err>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `std::convert::TryFrom`
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 56  |                 match TryFrom::try_from(n)? {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 56  |                 match std::convert::TryFrom::try_from(n)? {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tokio-sync v0.1.7
[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 `try_from`
[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" "f595c842f4f21961d3afeda61fa9b73f10b0a9df4a2a89fec68b1fc41af1f2ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f595c842f4f21961d3afeda61fa9b73f10b0a9df4a2a89fec68b1fc41af1f2ec", kill_on_drop: false }`
[INFO] [stdout] f595c842f4f21961d3afeda61fa9b73f10b0a9df4a2a89fec68b1fc41af1f2ec