[INFO] cloning repository https://github.com/MattFerraro/argmin_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MattFerraro/argmin_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattFerraro%2Fargmin_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattFerraro%2Fargmin_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a163cf8ecefc75b07083186ec61067ffb0cb3ea4
[INFO] checking MattFerraro/argmin_practice against try#342ed2e8608ee307743c341962b427652cdb06e9 for pr-146562
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattFerraro%2Fargmin_practice" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MattFerraro/argmin_practice
[INFO] finished tweaking git repo https://github.com/MattFerraro/argmin_practice
[INFO] tweaked toml for git repo https://github.com/MattFerraro/argmin_practice written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MattFerraro/argmin_practice on toolchain 342ed2e8608ee307743c341962b427652cdb06e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+342ed2e8608ee307743c341962b427652cdb06e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MattFerraro/argmin_practice 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" "+342ed2e8608ee307743c341962b427652cdb06e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argmin-math v0.2.1
[INFO] [stderr]   Downloaded slog-json v2.6.1
[INFO] [stderr]   Downloaded slog-async v2.7.0
[INFO] [stderr]   Downloaded time-macros v0.2.10
[INFO] [stderr]   Downloaded slog-term v2.9.0
[INFO] [stderr]   Downloaded wide v0.7.11
[INFO] [stderr]   Downloaded argmin v0.7.0
[INFO] [stderr]   Downloaded time v0.3.23
[INFO] [stderr]   Downloaded nalgebra v0.31.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+342ed2e8608ee307743c341962b427652cdb06e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba521406c57ebafffe459a3c2abdd974c6205f3f216ec28849efb3c7183a7049
[INFO] running `Command { std: "docker" "start" "-a" "ba521406c57ebafffe459a3c2abdd974c6205f3f216ec28849efb3c7183a7049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba521406c57ebafffe459a3c2abdd974c6205f3f216ec28849efb3c7183a7049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba521406c57ebafffe459a3c2abdd974c6205f3f216ec28849efb3c7183a7049", kill_on_drop: false }`
[INFO] [stdout] ba521406c57ebafffe459a3c2abdd974c6205f3f216ec28849efb3c7183a7049
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+342ed2e8608ee307743c341962b427652cdb06e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22abed89d7e7db237a230f2ba7b7d853df60ef13ff1cb315846450cd268e9b34
[INFO] running `Command { std: "docker" "start" "-a" "22abed89d7e7db237a230f2ba7b7d853df60ef13ff1cb315846450cd268e9b34", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.178
[INFO] [stderr]    Compiling serde_derive v1.0.178
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking safe_arch v0.7.1
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling time-macros v0.2.10
[INFO] [stderr]    Compiling thiserror v1.0.44
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking num-rational v0.4.1
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking wide v0.7.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking time v0.3.23
[INFO] [stdout] error[E0282]: type annotations needed for `Box<_>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/time-0.3.23/src/format_description/parse/mod.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let items = format_items
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     Ok(items.into())
[INFO] [stdout]    |              ---- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `items` an explicit type, where the placeholders `_` are specified
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let items: Box<_> = format_items
[INFO] [stdout]    |              ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `time` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "22abed89d7e7db237a230f2ba7b7d853df60ef13ff1cb315846450cd268e9b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22abed89d7e7db237a230f2ba7b7d853df60ef13ff1cb315846450cd268e9b34", kill_on_drop: false }`
[INFO] [stdout] 22abed89d7e7db237a230f2ba7b7d853df60ef13ff1cb315846450cd268e9b34