[INFO] cloning repository https://github.com/acanthite/serde_json-breaks-type-inference
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/acanthite/serde_json-breaks-type-inference" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facanthite%2Fserde_json-breaks-type-inference", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facanthite%2Fserde_json-breaks-type-inference'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cc3e3088f25f9ec0449f0b1c0896f9a0d041ada
[INFO] checking acanthite/serde_json-breaks-type-inference against beta-2021-10-15 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facanthite%2Fserde_json-breaks-type-inference" "/workspace/builds/worker-106/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-106/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/acanthite/serde_json-breaks-type-inference on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/acanthite/serde_json-breaks-type-inference
[INFO] finished tweaking git repo https://github.com/acanthite/serde_json-breaks-type-inference
[INFO] tweaked toml for git repo https://github.com/acanthite/serde_json-breaks-type-inference written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate git repo https://github.com/acanthite/serde_json-breaks-type-inference already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8a810f86e80db38347d8fd9caaceecea57ca0d50123b3e49db7d2d2984eb984
[INFO] running `Command { std: "docker" "start" "-a" "a8a810f86e80db38347d8fd9caaceecea57ca0d50123b3e49db7d2d2984eb984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8a810f86e80db38347d8fd9caaceecea57ca0d50123b3e49db7d2d2984eb984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a810f86e80db38347d8fd9caaceecea57ca0d50123b3e49db7d2d2984eb984", kill_on_drop: false }`
[INFO] [stdout] a8a810f86e80db38347d8fd9caaceecea57ca0d50123b3e49db7d2d2984eb984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54ec1f3ceb10e7f9c5537d52fbd7c4ad458ead0dcac544a4d6cbffec25369aa0
[INFO] running `Command { std: "docker" "start" "-a" "54ec1f3ceb10e7f9c5537d52fbd7c4ad458ead0dcac544a4d6cbffec25369aa0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking broken_inference v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]  --> src/other_broken.rs:7:48
[INFO] [stdout]   |
[INFO] [stdout] 7 |         assert_eq!(10, vec![1, 2, 3, 4].iter().sum());
[INFO] [stdout]   |                                                ^^^ cannot infer type for type parameter `S` declared on the associated function `sum`
[INFO] [stdout]   |
[INFO] [stdout]   = note: cannot satisfy `_: Sum<&i32>`
[INFO] [stdout] help: consider specifying the type argument in the method call
[INFO] [stdout]   |
[INFO] [stdout] 7 |         assert_eq!(10, vec![1, 2, 3, 4].iter().sum::<S>());
[INFO] [stdout]   |                                                   +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |         assert_eq!(10, vec![1, 2, 3, 4].iter().sum());
[INFO] [stdout]    |                                                ^^^ cannot infer type for type parameter `S` declared on the associated function `sum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Sum<&i32>`
[INFO] [stdout] help: consider specifying the type argument in the method call
[INFO] [stdout]    |
[INFO] [stdout] 12 |         assert_eq!(10, vec![1, 2, 3, 4].iter().sum::<S>());
[INFO] [stdout]    |                                                   +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:22:38
[INFO] [stdout]    |
[INFO] [stdout] 22 |         assert_eq!(10, linked.iter().sum())
[INFO] [stdout]    |                                      ^^^ cannot infer type for type parameter `S` declared on the associated function `sum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Sum<&i32>`
[INFO] [stdout] help: consider specifying the type argument in the method call
[INFO] [stdout]    |
[INFO] [stdout] 22 |         assert_eq!(10, linked.iter().sum::<S>())
[INFO] [stdout]    |                                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `broken_inference` due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "54ec1f3ceb10e7f9c5537d52fbd7c4ad458ead0dcac544a4d6cbffec25369aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ec1f3ceb10e7f9c5537d52fbd7c4ad458ead0dcac544a4d6cbffec25369aa0", kill_on_drop: false }`
[INFO] [stdout] 54ec1f3ceb10e7f9c5537d52fbd7c4ad458ead0dcac544a4d6cbffec25369aa0
