[INFO] fetching crate abi_stable_derive_lib 0.6.2...
[INFO] checking abi_stable_derive_lib-0.6.2 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate abi_stable_derive_lib 0.6.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate abi_stable_derive_lib 0.6.2 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate abi_stable_derive_lib 0.6.2
[INFO] finished tweaking crates.io crate abi_stable_derive_lib 0.6.2
[INFO] tweaked toml for crates.io crate abi_stable_derive_lib 0.6.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abi_stable_shared v0.6.0
[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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ae5e0b3b18d1524ada5365eb6e8f3cbf10f2fab7a4004207606c92c7f18a66e
[INFO] running `Command { std: "docker" "start" "-a" "6ae5e0b3b18d1524ada5365eb6e8f3cbf10f2fab7a4004207606c92c7f18a66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ae5e0b3b18d1524ada5365eb6e8f3cbf10f2fab7a4004207606c92c7f18a66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae5e0b3b18d1524ada5365eb6e8f3cbf10f2fab7a4004207606c92c7f18a66e", kill_on_drop: false }`
[INFO] [stdout] 6ae5e0b3b18d1524ada5365eb6e8f3cbf10f2fab7a4004207606c92c7f18a66e
[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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16ac65b24d83f4ac8ec3f631da08c75accd4b2268119d5750b9e1e1e78987e66
[INFO] running `Command { std: "docker" "start" "-a" "16ac65b24d83f4ac8ec3f631da08c75accd4b2268119d5750b9e1e1e78987e66", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]    Compiling core_extensions v0.1.20
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking abi_stable_shared v0.6.0
[INFO] [stderr]     Checking abi_stable_derive_lib v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/stable_abi/attribute_parsing.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 | /                 &[
[INFO] [stdout] 205 | |                     "Self: ::std::ops::Deref",
[INFO] [stdout] 206 | |                     "<Self as ::std::ops::Deref>::Target:__SharedStableAbi",
[INFO] [stdout] 207 | |                 ].iter()
[INFO] [stdout] 208 | |                  .map(|x| syn::parse_str::<WherePredicate>(x).unwrap() )
[INFO] [stdout] 209 | |                  .extending(&mut this.extra_bounds);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/stable_abi/attribute_parsing.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 | /                 &[
[INFO] [stdout] 205 | |                     "Self: ::std::ops::Deref",
[INFO] [stdout] 206 | |                     "<Self as ::std::ops::Deref>::Target:__SharedStableAbi",
[INFO] [stdout] 207 | |                 ].iter()
[INFO] [stdout] 208 | |                  .map(|x| syn::parse_str::<WherePredicate>(x).unwrap() )
[INFO] [stdout] 209 | |                  .extending(&mut this.extra_bounds);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` 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 12.06s
[INFO] running `Command { std: "docker" "inspect" "16ac65b24d83f4ac8ec3f631da08c75accd4b2268119d5750b9e1e1e78987e66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ac65b24d83f4ac8ec3f631da08c75accd4b2268119d5750b9e1e1e78987e66", kill_on_drop: false }`
[INFO] [stdout] 16ac65b24d83f4ac8ec3f631da08c75accd4b2268119d5750b9e1e1e78987e66