[INFO] fetching crate lincoln 0.1.0...
[INFO] checking lincoln-0.1.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate lincoln 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lincoln 0.1.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lincoln 0.1.0
[INFO] finished tweaking crates.io crate lincoln 0.1.0
[INFO] tweaked toml for crates.io crate lincoln 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c07b548c1c644a05a556b598a0f8be60a9f6c3d173c977829e8e15bad2a74446
[INFO] running `Command { std: "docker" "start" "-a" "c07b548c1c644a05a556b598a0f8be60a9f6c3d173c977829e8e15bad2a74446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c07b548c1c644a05a556b598a0f8be60a9f6c3d173c977829e8e15bad2a74446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c07b548c1c644a05a556b598a0f8be60a9f6c3d173c977829e8e15bad2a74446", kill_on_drop: false }`
[INFO] [stdout] c07b548c1c644a05a556b598a0f8be60a9f6c3d173c977829e8e15bad2a74446
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7491e3e073c87d567b13facdd99e23307679b4ffbd45be38aecf2434634d4da
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d7491e3e073c87d567b13facdd99e23307679b4ffbd45be38aecf2434634d4da", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking lincoln_common v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking rustyline v3.0.0
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-3.0.0/src/lib.rs:655:43
[INFO] [stdout]     |
[INFO] [stdout] 655 |             editor.add_history_entry(line.as_ref());
[INFO] [stdout]     |                                      -----^^^^^^--
[INFO] [stdout]     |                                      |    |
[INFO] [stdout]     |                                      |    cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]     |                                      this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-3.0.0/src/history.rs:151:28
[INFO] [stdout]     |
[INFO] [stdout] 151 |             self.add(line?.as_ref()); // TODO truncate to MAX_LINE
[INFO] [stdout]     |                      ------^^^^^^--
[INFO] [stdout]     |                      |     |
[INFO] [stdout]     |                      |     cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]     |                      this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustyline`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d7491e3e073c87d567b13facdd99e23307679b4ffbd45be38aecf2434634d4da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7491e3e073c87d567b13facdd99e23307679b4ffbd45be38aecf2434634d4da", kill_on_drop: false }`
[INFO] [stdout] d7491e3e073c87d567b13facdd99e23307679b4ffbd45be38aecf2434634d4da