[INFO] fetching crate ittech 0.2.0...
[INFO] checking ittech-0.2.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate ittech 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ittech 0.2.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ittech 0.2.0
[INFO] finished tweaking crates.io crate ittech 0.2.0
[INFO] tweaked toml for crates.io crate ittech 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate ittech 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c186aa64f85147cebe63963a699a6ffd22d78970d02170cad12c7d93e862dad
[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" "7c186aa64f85147cebe63963a699a6ffd22d78970d02170cad12c7d93e862dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c186aa64f85147cebe63963a699a6ffd22d78970d02170cad12c7d93e862dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c186aa64f85147cebe63963a699a6ffd22d78970d02170cad12c7d93e862dad", kill_on_drop: false }`
[INFO] [stdout] 7c186aa64f85147cebe63963a699a6ffd22d78970d02170cad12c7d93e862dad
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a03b0fe822def6e7335bf45170097ad4025e7ca0572c7d8456898242c5943ed1
[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" "a03b0fe822def6e7335bf45170097ad4025e7ca0572c7d8456898242c5943ed1", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking ittech v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(external_doc)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(external_doc)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `include`
[INFO] [stdout]   --> src/lib.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[doc(include = "../ITTECH.txt")]
[INFO] [stdout]    | ------^^^^^^^^^^^^^^^^^^^^^^^^^-- help: use `doc = include_str!` instead: `#[doc = include_str!("../ITTECH.txt")]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `include`
[INFO] [stdout]   --> src/lib.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[doc(include = "../ITTECH.txt")]
[INFO] [stdout]    | ------^^^^^^^^^^^^^^^^^^^^^^^^^-- help: use `doc = include_str!` instead: `#[doc = include_str!("../ITTECH.txt")]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ittech`
[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] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a03b0fe822def6e7335bf45170097ad4025e7ca0572c7d8456898242c5943ed1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03b0fe822def6e7335bf45170097ad4025e7ca0572c7d8456898242c5943ed1", kill_on_drop: false }`
[INFO] [stdout] a03b0fe822def6e7335bf45170097ad4025e7ca0572c7d8456898242c5943ed1