[INFO] fetching crate render-tree 0.1.1...
[INFO] checking render-tree-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate render-tree 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate render-tree 0.1.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate render-tree 0.1.1
[INFO] finished tweaking crates.io crate render-tree 0.1.1
[INFO] tweaked toml for crates.io crate render-tree 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 53 packages
[INFO] [stderr]       Adding ansi_term v0.11.0 (latest: v0.12.1)
[INFO] [stderr]       Adding env_logger v0.5.13 (latest: v0.11.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding itertools v0.7.11 (latest: v0.12.1)
[INFO] [stderr]       Adding pretty_env_logger v0.2.5 (latest: v0.5.0)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71a311fe3edd9c150cfe8eac38ea8c7aaea8c3d531e1f641a16b83be8d948dd2
[INFO] running `Command { std: "docker" "start" "-a" "71a311fe3edd9c150cfe8eac38ea8c7aaea8c3d531e1f641a16b83be8d948dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71a311fe3edd9c150cfe8eac38ea8c7aaea8c3d531e1f641a16b83be8d948dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71a311fe3edd9c150cfe8eac38ea8c7aaea8c3d531e1f641a16b83be8d948dd2", kill_on_drop: false }`
[INFO] [stdout] 71a311fe3edd9c150cfe8eac38ea8c7aaea8c3d531e1f641a16b83be8d948dd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fce71fa1e4fc971d47398e063ac2e5c3c6484a18e957027e0cfcca4561efc7bd
[INFO] running `Command { std: "docker" "start" "-a" "fce71fa1e4fc971d47398e063ac2e5c3c6484a18e957027e0cfcca4561efc7bd", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking pretty_env_logger v0.2.5
[INFO] [stderr]     Checking render-tree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::macros::*`
[INFO] [stdout]  --> src/prelude.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use crate::macros::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/stylesheet/accumulator.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termcolor` is imported redundantly
[INFO] [stdout]  --> src/stylesheet/color.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use termcolor;
[INFO] [stdout]   |     ^^^^^^^^^ the item `termcolor` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/stylesheet/style.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termcolor` is imported redundantly
[INFO] [stdout]  --> src/stylesheet/style.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use termcolor::{self, ColorSpec};
[INFO] [stdout]   |                 ^^^^ the item `termcolor` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::macros::*`
[INFO] [stdout]  --> src/prelude.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use crate::macros::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/stylesheet/accumulator.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termcolor` is imported redundantly
[INFO] [stdout]  --> src/stylesheet/color.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use termcolor;
[INFO] [stdout]   |     ^^^^^^^^^ the item `termcolor` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/stylesheet/style.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termcolor` is imported redundantly
[INFO] [stdout]  --> src/stylesheet/style.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use termcolor::{self, ColorSpec};
[INFO] [stdout]   |                 ^^^^ the item `termcolor` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly
[INFO] [stdout]    --> src/stylesheet/mod.rs:402:9
[INFO] [stdout]     |
[INFO] [stdout] 402 |     use pretty_env_logger;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/debug.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |         for item in tree.clone() {
[INFO] [stdout]    |                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[document::Node]` does not implement `Clone`, so calling `clone` on `&[document::Node]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/debug.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |         for item in tree.clone() {
[INFO] [stdout]    |                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[document::Node]` does not implement `Clone`, so calling `clone` on `&[document::Node]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "fce71fa1e4fc971d47398e063ac2e5c3c6484a18e957027e0cfcca4561efc7bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fce71fa1e4fc971d47398e063ac2e5c3c6484a18e957027e0cfcca4561efc7bd", kill_on_drop: false }`
[INFO] [stdout] fce71fa1e4fc971d47398e063ac2e5c3c6484a18e957027e0cfcca4561efc7bd