[INFO] fetching crate diff_fmt 0.1.0...
[INFO] checking diff_fmt-0.1.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate diff_fmt 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate diff_fmt 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 diff_fmt 0.1.0
[INFO] finished tweaking crates.io crate diff_fmt 0.1.0
[INFO] tweaked toml for crates.io crate diff_fmt 0.1.0 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 223d9fb5eee06230d61e628e82e1724279df776ebf25c7dfb2b372947c25d7ad
[INFO] running `Command { std: "docker" "start" "-a" "223d9fb5eee06230d61e628e82e1724279df776ebf25c7dfb2b372947c25d7ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "223d9fb5eee06230d61e628e82e1724279df776ebf25c7dfb2b372947c25d7ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "223d9fb5eee06230d61e628e82e1724279df776ebf25c7dfb2b372947c25d7ad", kill_on_drop: false }`
[INFO] [stdout] 223d9fb5eee06230d61e628e82e1724279df776ebf25c7dfb2b372947c25d7ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e180d664521e7d34380ead974d4040959c6b8973d6cf0f6bb8279cb0b41c46c1
[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" "e180d664521e7d34380ead974d4040959c6b8973d6cf0f6bb8279cb0b41c46c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking diff_fmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Position` in `v1`
[INFO] [stdout]   --> src/lib.rs:40:40
[INFO] [stdout]    |
[INFO] [stdout] 40 |         position: ::core::fmt::rt::v1::Position::At(0usize),
[INFO] [stdout]    |                                        ^^^^^^^^ could not find `Position` in `v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Position` in `v1`
[INFO] [stdout]   --> src/lib.rs:40:40
[INFO] [stdout]    |
[INFO] [stdout] 40 |         position: ::core::fmt::rt::v1::Position::At(0usize),
[INFO] [stdout]    |                                        ^^^^^^^^ could not find `Position` in `v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Position` in `v1`
[INFO] [stdout]    --> src/lib.rs:491:48
[INFO] [stdout]     |
[INFO] [stdout] 491 |                 position: ::core::fmt::rt::v1::Position::At(0usize),
[INFO] [stdout]     |                                                ^^^^^^^^ could not find `Position` in `v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Position` in `v1`
[INFO] [stdout]    --> src/lib.rs:508:48
[INFO] [stdout]     |
[INFO] [stdout] 508 |                 position: ::core::fmt::rt::v1::Position::At(0usize),
[INFO] [stdout]     |                                                ^^^^^^^^ could not find `Position` in `v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diff_fmt`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[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" "e180d664521e7d34380ead974d4040959c6b8973d6cf0f6bb8279cb0b41c46c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e180d664521e7d34380ead974d4040959c6b8973d6cf0f6bb8279cb0b41c46c1", kill_on_drop: false }`
[INFO] [stdout] e180d664521e7d34380ead974d4040959c6b8973d6cf0f6bb8279cb0b41c46c1