[INFO] fetching crate loosen_map 0.1.1...
[INFO] testing loosen_map-0.1.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate loosen_map 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate loosen_map 0.1.1
[INFO] finished tweaking crates.io crate loosen_map 0.1.1
[INFO] tweaked toml for crates.io crate loosen_map 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate loosen_map 0.1.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a91936dfd5120b387d0b8dc85afc00c690b9143015b383c52b662344f9c5b329
[INFO] running `Command { std: "docker" "start" "-a" "a91936dfd5120b387d0b8dc85afc00c690b9143015b383c52b662344f9c5b329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a91936dfd5120b387d0b8dc85afc00c690b9143015b383c52b662344f9c5b329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a91936dfd5120b387d0b8dc85afc00c690b9143015b383c52b662344f9c5b329", kill_on_drop: false }`
[INFO] [stdout] a91936dfd5120b387d0b8dc85afc00c690b9143015b383c52b662344f9c5b329
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 893a6613e72eeccb1cf061b5823ef44a399e179ed81bb8926539aad4ece519de
[INFO] running `Command { std: "docker" "start" "-a" "893a6613e72eeccb1cf061b5823ef44a399e179ed81bb8926539aad4ece519de", kill_on_drop: false }`
[INFO] [stderr]    Compiling loosen_map v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(external_doc)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.54.0; see <https://github.com/rust-lang/rust/pull/85457> for more information
[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:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![doc(include = "../README.md")]
[INFO] [stdout]   |        ^^^^^^^ help: use `doc = include_str!` instead: `#![doc = include_str!("../README.md")]`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `loosen_map` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "893a6613e72eeccb1cf061b5823ef44a399e179ed81bb8926539aad4ece519de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "893a6613e72eeccb1cf061b5823ef44a399e179ed81bb8926539aad4ece519de", kill_on_drop: false }`
[INFO] [stdout] 893a6613e72eeccb1cf061b5823ef44a399e179ed81bb8926539aad4ece519de