[INFO] fetching crate double-dyn 0.1.1...
[INFO] checking double-dyn-0.1.1 against try#f6d7c613ae2d161ff37dbc63cc5abd809c878597 for pr-83850
[INFO] extracting crate double-dyn 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate double-dyn 0.1.1 on toolchain f6d7c613ae2d161ff37dbc63cc5abd809c878597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6d7c613ae2d161ff37dbc63cc5abd809c878597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate double-dyn 0.1.1
[INFO] finished tweaking crates.io crate double-dyn 0.1.1
[INFO] tweaked toml for crates.io crate double-dyn 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6d7c613ae2d161ff37dbc63cc5abd809c878597" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6d7c613ae2d161ff37dbc63cc5abd809c878597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+f6d7c613ae2d161ff37dbc63cc5abd809c878597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2a8b06f9968ca280198b4df52b935f74e798b867ef8c2aaaee709794cb659ae
[INFO] running `Command { std: "docker" "start" "-a" "c2a8b06f9968ca280198b4df52b935f74e798b867ef8c2aaaee709794cb659ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2a8b06f9968ca280198b4df52b935f74e798b867ef8c2aaaee709794cb659ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2a8b06f9968ca280198b4df52b935f74e798b867ef8c2aaaee709794cb659ae", kill_on_drop: false }`
[INFO] [stdout] c2a8b06f9968ca280198b4df52b935f74e798b867ef8c2aaaee709794cb659ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+f6d7c613ae2d161ff37dbc63cc5abd809c878597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3fc55b56ef02ddbf3975be455652a785ac715c7b75cb4b834572c276d38225e
[INFO] running `Command { std: "docker" "start" "-a" "c3fc55b56ef02ddbf3975be455652a785ac715c7b75cb4b834572c276d38225e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]     Checking unicode-ident v1.0.1
[INFO] [stderr]     Checking heck v0.4.0
[INFO] [stderr]     Checking double-dyn v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:496:56
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let (l2_sig, _l2_sig_tokens) = l2_sigs.get(&(orig_fn_name, &a_type_name)).unwrap();
[INFO] [stdout]     |                                                    --- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found `&std::string::String`
[INFO] [stdout]     |                                                    |
[INFO] [stdout]     |                                                    arguments to this function are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&(&std::string::String, &std::string::String)`
[INFO] [stdout]                found reference `&(&std::string::String, &&std::string::String)`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:496:56
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let (l2_sig, _l2_sig_tokens) = l2_sigs.get(&(orig_fn_name, &a_type_name)).unwrap();
[INFO] [stdout]     |                                                    --- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found `&std::string::String`
[INFO] [stdout]     |                                                    |
[INFO] [stdout]     |                                                    arguments to this function are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&(&std::string::String, &std::string::String)`
[INFO] [stdout]                found reference `&(&std::string::String, &&std::string::String)`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `double-dyn` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `double-dyn` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c3fc55b56ef02ddbf3975be455652a785ac715c7b75cb4b834572c276d38225e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3fc55b56ef02ddbf3975be455652a785ac715c7b75cb4b834572c276d38225e", kill_on_drop: false }`
[INFO] [stdout] c3fc55b56ef02ddbf3975be455652a785ac715c7b75cb4b834572c276d38225e