[INFO] fetching crate zmtp 0.6.0...
[INFO] checking zmtp-0.6.0 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate zmtp 0.6.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate zmtp 0.6.0 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zmtp 0.6.0
[INFO] finished tweaking crates.io crate zmtp 0.6.0
[INFO] tweaked toml for crates.io crate zmtp 0.6.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--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]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.5.3 (latest: v1.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8ab3e56693c8fef6020e6e165ff2888fff5fe1cfe995d3f13aca4755722aac0
[INFO] running `Command { std: "docker" "start" "-a" "f8ab3e56693c8fef6020e6e165ff2888fff5fe1cfe995d3f13aca4755722aac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8ab3e56693c8fef6020e6e165ff2888fff5fe1cfe995d3f13aca4755722aac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8ab3e56693c8fef6020e6e165ff2888fff5fe1cfe995d3f13aca4755722aac0", kill_on_drop: false }`
[INFO] [stdout] f8ab3e56693c8fef6020e6e165ff2888fff5fe1cfe995d3f13aca4755722aac0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae3b7d6044dd319538991d55b8a42f57f32388c7b3c59a8f5afae245a2a072b3
[INFO] running `Command { std: "docker" "start" "-a" "ae3b7d6044dd319538991d55b8a42f57f32388c7b3c59a8f5afae245a2a072b3", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking zmtp v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/reader.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |             cmd.add_metadata(name.borrow(), val_bytes);
[INFO] [stdout]     |                 ^^^^^^^^^^^^      ------ type must be known at this point
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 cannot infer type of the type parameter `S` declared on the method `add_metadata`
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `Cow<'_, str>: Borrow<_>` found in the following crates: `alloc`, `core`:
[INFO] [stdout]             - impl<'a, B> Borrow<B> for Cow<'a, B>
[INFO] [stdout]               where B: ToOwned, B: ?Sized;
[INFO] [stdout]             - impl<T> Borrow<T> for T
[INFO] [stdout]               where T: ?Sized;
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 152 |             cmd.add_metadata::<&Borrowed>(name.borrow(), val_bytes);
[INFO] [stdout]     |                             +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/reader.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |             cmd.add_metadata(name.borrow(), val_bytes);
[INFO] [stdout]     |                 ^^^^^^^^^^^^      ------ type must be known at this point
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 cannot infer type of the type parameter `S` declared on the method `add_metadata`
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `Cow<'_, str>: Borrow<_>` found in the following crates: `alloc`, `core`:
[INFO] [stdout]             - impl<'a, B> Borrow<B> for Cow<'a, B>
[INFO] [stdout]               where B: ToOwned, B: ?Sized;
[INFO] [stdout]             - impl<T> Borrow<T> for T
[INFO] [stdout]               where T: ?Sized;
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 152 |             cmd.add_metadata::<&Borrowed>(name.borrow(), val_bytes);
[INFO] [stdout]     |                             +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zmtp` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zmtp` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ae3b7d6044dd319538991d55b8a42f57f32388c7b3c59a8f5afae245a2a072b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae3b7d6044dd319538991d55b8a42f57f32388c7b3c59a8f5afae245a2a072b3", kill_on_drop: false }`
[INFO] [stdout] ae3b7d6044dd319538991d55b8a42f57f32388c7b3c59a8f5afae245a2a072b3