[INFO] fetching crate algar 0.4.1...
[INFO] checking algar-0.4.1 against try#149edce6c6ee840adb602803b96d083101ef3592 for pr-133502-16
[INFO] extracting crate algar 0.4.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate algar 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate algar 0.4.1
[INFO] tweaked toml for crates.io crate algar 0.4.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate algar 0.4.1 on toolchain 149edce6c6ee840adb602803b96d083101ef3592
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+149edce6c6ee840adb602803b96d083101ef3592" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate algar 0.4.1 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" "+149edce6c6ee840adb602803b96d083101ef3592" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+149edce6c6ee840adb602803b96d083101ef3592" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d87597ae3f78969279256d431b29e58609fe21713b63d5d3166d1c65a288d119
[INFO] running `Command { std: "docker" "start" "-a" "d87597ae3f78969279256d431b29e58609fe21713b63d5d3166d1c65a288d119", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d87597ae3f78969279256d431b29e58609fe21713b63d5d3166d1c65a288d119", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d87597ae3f78969279256d431b29e58609fe21713b63d5d3166d1c65a288d119", kill_on_drop: false }`
[INFO] [stdout] d87597ae3f78969279256d431b29e58609fe21713b63d5d3166d1c65a288d119
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+149edce6c6ee840adb602803b96d083101ef3592" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d723f97560267861d9c02308eb5548c9cda0515be92d86de20804a3bbbff5502
[INFO] running `Command { std: "docker" "start" "-a" "d723f97560267861d9c02308eb5548c9cda0515be92d86de20804a3bbbff5502", kill_on_drop: false }`
[INFO] [stderr]     Checking algar v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/traversable.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 |             k.lift_a2(c, |mut acc, v: B| {
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 50 |                 acc.insert(0, v);
[INFO] [stdout]    |                     ------ type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 49 |             k.lift_a2(c, |mut acc: /* Type */, v: B| {
[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 `algar` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/traversable.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 |             k.lift_a2(c, |mut acc, v: B| {
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 50 |                 acc.insert(0, v);
[INFO] [stdout]    |                     ------ type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 49 |             k.lift_a2(c, |mut acc: /* Type */, v: B| {
[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 `algar` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d723f97560267861d9c02308eb5548c9cda0515be92d86de20804a3bbbff5502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d723f97560267861d9c02308eb5548c9cda0515be92d86de20804a3bbbff5502", kill_on_drop: false }`
[INFO] [stdout] d723f97560267861d9c02308eb5548c9cda0515be92d86de20804a3bbbff5502