[INFO] fetching crate error-chain-mini 0.2.0...
[INFO] checking error-chain-mini-0.2.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate error-chain-mini 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate error-chain-mini 0.2.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate error-chain-mini 0.2.0
[INFO] finished tweaking crates.io crate error-chain-mini 0.2.0
[INFO] tweaked toml for crates.io crate error-chain-mini 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb4c79954e527fd359c480d8fcb5208647e88e4db283a930cc989c1512b540e5
[INFO] running `Command { std: "docker" "start" "-a" "eb4c79954e527fd359c480d8fcb5208647e88e4db283a930cc989c1512b540e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb4c79954e527fd359c480d8fcb5208647e88e4db283a930cc989c1512b540e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4c79954e527fd359c480d8fcb5208647e88e4db283a930cc989c1512b540e5", kill_on_drop: false }`
[INFO] [stdout] eb4c79954e527fd359c480d8fcb5208647e88e4db283a930cc989c1512b540e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99a6972d0229cf3afa1d86287f4191bf667c47318af2c9c9560aa402b80a637d
[INFO] running `Command { std: "docker" "start" "-a" "99a6972d0229cf3afa1d86287f4191bf667c47318af2c9c9560aa402b80a637d", kill_on_drop: false }`
[INFO] [stderr]     Checking error-chain-mini v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:263:42
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn new(kind: T, context: Vec<Box<ErrorContext>>) -> Self {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorContext`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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/lib.rs:426:22
[INFO] [stdout]     |
[INFO] [stdout] 426 |     context: Vec<Box<ErrorContext>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorContext`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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/lib.rs:430:38
[INFO] [stdout]     |
[INFO] [stdout] 430 |     fn new(kind: T, context: Vec<Box<ErrorContext>>) -> Self {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorContext`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.8.1
[INFO] [stderr]    Compiling error-chain-mini-derive v0.2.0
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:263:42
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn new(kind: T, context: Vec<Box<ErrorContext>>) -> Self {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorContext`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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/lib.rs:426:22
[INFO] [stdout]     |
[INFO] [stdout] 426 |     context: Vec<Box<ErrorContext>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorContext`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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/lib.rs:430:38
[INFO] [stdout]     |
[INFO] [stdout] 430 |     fn new(kind: T, context: Vec<Box<ErrorContext>>) -> Self {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorContext`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Kind2`
[INFO] [stdout]    --> tests/derive_tests.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         Kind2,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.03s
[INFO] running `Command { std: "docker" "inspect" "99a6972d0229cf3afa1d86287f4191bf667c47318af2c9c9560aa402b80a637d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99a6972d0229cf3afa1d86287f4191bf667c47318af2c9c9560aa402b80a637d", kill_on_drop: false }`
[INFO] [stdout] 99a6972d0229cf3afa1d86287f4191bf667c47318af2c9c9560aa402b80a637d