[INFO] fetching crate diff_fmt 0.1.0...
[INFO] checking diff_fmt-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate diff_fmt 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate diff_fmt 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-10/source/rust-toolchain
[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-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcae882301022ebdb002bbe9b59f5cc689393a37c58e152a9f5276ce465efd81
[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" "fcae882301022ebdb002bbe9b59f5cc689393a37c58e152a9f5276ce465efd81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcae882301022ebdb002bbe9b59f5cc689393a37c58e152a9f5276ce465efd81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcae882301022ebdb002bbe9b59f5cc689393a37c58e152a9f5276ce465efd81", kill_on_drop: false }`
[INFO] [stdout] fcae882301022ebdb002bbe9b59f5cc689393a37c58e152a9f5276ce465efd81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1272d54b531087261ff8966eff706e8d8fbeaaeb1ccefd65c795010e58764786
[INFO] running `Command { std: "docker" "start" "-a" "1272d54b531087261ff8966eff706e8d8fbeaaeb1ccefd65c795010e58764786", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking termion v1.5.6
[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 previous error
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "1272d54b531087261ff8966eff706e8d8fbeaaeb1ccefd65c795010e58764786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1272d54b531087261ff8966eff706e8d8fbeaaeb1ccefd65c795010e58764786", kill_on_drop: false }`
[INFO] [stdout] 1272d54b531087261ff8966eff706e8d8fbeaaeb1ccefd65c795010e58764786