[INFO] fetching crate algar 0.4.1...
[INFO] checking algar-0.4.1 against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for pr-133502-19
[INFO] extracting crate algar 0.4.1 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate algar 0.4.1 on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "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" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cf93b641ebe59909b7da497527f8ac1192393fd3fec4e64b1c5b9ad2edff17d
[INFO] running `Command { std: "docker" "start" "-a" "7cf93b641ebe59909b7da497527f8ac1192393fd3fec4e64b1c5b9ad2edff17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cf93b641ebe59909b7da497527f8ac1192393fd3fec4e64b1c5b9ad2edff17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cf93b641ebe59909b7da497527f8ac1192393fd3fec4e64b1c5b9ad2edff17d", kill_on_drop: false }`
[INFO] [stdout] 7cf93b641ebe59909b7da497527f8ac1192393fd3fec4e64b1c5b9ad2edff17d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17b82dc1edb98119b9034ba30d9141d1760ce6c2b45f34292aceced4051a596c
[INFO] running `Command { std: "docker" "start" "-a" "17b82dc1edb98119b9034ba30d9141d1760ce6c2b45f34292aceced4051a596c", 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] 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] 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" "17b82dc1edb98119b9034ba30d9141d1760ce6c2b45f34292aceced4051a596c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17b82dc1edb98119b9034ba30d9141d1760ce6c2b45f34292aceced4051a596c", kill_on_drop: false }`
[INFO] [stdout] 17b82dc1edb98119b9034ba30d9141d1760ce6c2b45f34292aceced4051a596c