[INFO] fetching crate horrorshow 0.8.3...
[INFO] checking horrorshow-0.8.3 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate horrorshow 0.8.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate horrorshow 0.8.3 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate horrorshow 0.8.3
[INFO] finished tweaking crates.io crate horrorshow 0.8.3
[INFO] tweaked toml for crates.io crate horrorshow 0.8.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate horrorshow 0.8.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a903853887152e73b4969da0f952a5e820097216f5cca091d8301367a6aee7c
[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" "8a903853887152e73b4969da0f952a5e820097216f5cca091d8301367a6aee7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a903853887152e73b4969da0f952a5e820097216f5cca091d8301367a6aee7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a903853887152e73b4969da0f952a5e820097216f5cca091d8301367a6aee7c", kill_on_drop: false }`
[INFO] [stdout] 8a903853887152e73b4969da0f952a5e820097216f5cca091d8301367a6aee7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4596a8eecd50af94265ed2ffe58edd2c34cfebb182b449148062e0467456175e
[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" "4596a8eecd50af94265ed2ffe58edd2c34cfebb182b449148062e0467456175e", kill_on_drop: false }`
[INFO] [stderr]     Checking horrorshow v0.8.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     c!("The standard HTML5 doctype (this *is* the doctype you're looking for)." => HTML "<!DOCTYPE html>");
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |         c!("The HTML 4.001 strict doctype." =>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |         c!("The HTML 4.001 transitional doctype." =>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         c!("The HTML 4.001 frameset doctype." =>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     c!("The standard HTML5 doctype (this *is* the doctype you're looking for)." => HTML "<!DOCTYPE html>");
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |         c!("The HTML 4.001 strict doctype." =>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |         c!("The HTML 4.001 transitional doctype." =>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: invalid `doc` attribute
[INFO] [stdout]   --> src/helper.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         c!("The HTML 4.001 frameset doctype." =>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |         RenderMut::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^^^^ help: use `dyn`: `<dyn RenderMut>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` 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 the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         RenderMut::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^^^^ help: use `dyn`: `<dyn RenderMut>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         Render::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^ help: use `dyn`: `<dyn Render>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         Render::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^ help: use `dyn`: `<dyn Render>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |         RenderMut::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^^^^ help: use `dyn`: `<dyn RenderMut>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` 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 the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         RenderMut::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^^^^ help: use `dyn`: `<dyn RenderMut>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         Render::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^ help: use `dyn`: `<dyn Render>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         Render::size_hint(&**self)
[INFO] [stdout]     |         ^^^^^^ help: use `dyn`: `<dyn Render>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "4596a8eecd50af94265ed2ffe58edd2c34cfebb182b449148062e0467456175e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4596a8eecd50af94265ed2ffe58edd2c34cfebb182b449148062e0467456175e", kill_on_drop: false }`
[INFO] [stdout] 4596a8eecd50af94265ed2ffe58edd2c34cfebb182b449148062e0467456175e