[INFO] fetching crate type-variance 0.1.0...
[INFO] checking type-variance-0.1.0 against master#bbcc1691a4646a6d2ebb2189bdff5b878407fbe6 for pr-117351
[INFO] extracting crate type-variance 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate type-variance 0.1.0 on toolchain bbcc1691a4646a6d2ebb2189bdff5b878407fbe6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate type-variance 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate type-variance 0.1.0
[INFO] tweaked toml for crates.io crate type-variance 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd2fb7bef22a5a67dfe1477f2877ef744fce52211daf379d714981f4a9061be3
[INFO] running `Command { std: "docker" "start" "-a" "dd2fb7bef22a5a67dfe1477f2877ef744fce52211daf379d714981f4a9061be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd2fb7bef22a5a67dfe1477f2877ef744fce52211daf379d714981f4a9061be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd2fb7bef22a5a67dfe1477f2877ef744fce52211daf379d714981f4a9061be3", kill_on_drop: false }`
[INFO] [stdout] dd2fb7bef22a5a67dfe1477f2877ef744fce52211daf379d714981f4a9061be3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12d357b390c64db16135cc1a87846fc5a8ae757a6c80bf25208dda3e95b7b3c3
[INFO] running `Command { std: "docker" "start" "-a" "12d357b390c64db16135cc1a87846fc5a8ae757a6c80bf25208dda3e95b7b3c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling trybuild v1.0.85
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking type-variance v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking basic-toml v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `Command { std: "docker" "inspect" "12d357b390c64db16135cc1a87846fc5a8ae757a6c80bf25208dda3e95b7b3c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12d357b390c64db16135cc1a87846fc5a8ae757a6c80bf25208dda3e95b7b3c3", kill_on_drop: false }`
[INFO] [stdout] 12d357b390c64db16135cc1a87846fc5a8ae757a6c80bf25208dda3e95b7b3c3
[INFO] checking type-variance-0.1.0 against try#ac89e27721b9b4d1482ebc87f2f83b4e23d49d71 for pr-117351
[INFO] extracting crate type-variance 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate type-variance 0.1.0 on toolchain ac89e27721b9b4d1482ebc87f2f83b4e23d49d71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate type-variance 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate type-variance 0.1.0
[INFO] tweaked toml for crates.io crate type-variance 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa376a87b79a3b93943b19558a6f4b467fd1b5d83db5d32d158dafbf9460406f
[INFO] running `Command { std: "docker" "start" "-a" "aa376a87b79a3b93943b19558a6f4b467fd1b5d83db5d32d158dafbf9460406f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa376a87b79a3b93943b19558a6f4b467fd1b5d83db5d32d158dafbf9460406f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa376a87b79a3b93943b19558a6f4b467fd1b5d83db5d32d158dafbf9460406f", kill_on_drop: false }`
[INFO] [stdout] aa376a87b79a3b93943b19558a6f4b467fd1b5d83db5d32d158dafbf9460406f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53c09cfaeccc62425c76d9a165391ab08f1afadf171c226a73a965e1b4aae3d6
[INFO] running `Command { std: "docker" "start" "-a" "53c09cfaeccc62425c76d9a165391ab08f1afadf171c226a73a965e1b4aae3d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling trybuild v1.0.85
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking type-variance v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking basic-toml v0.1.7
[INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:107:25
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub struct Covariant<T: ?Sized> {
[INFO] [stdout]     |                      - this type parameter needs to be `Sized`
[INFO] [stdout] 107 |     marker: PhantomData<fn() -> T>,
[INFO] [stdout]     |                         ^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = note: the return type of a function must have a statically known size
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]     |
[INFO] [stdout] 106 - pub struct Covariant<T: ?Sized> {
[INFO] [stdout] 106 + pub struct Covariant<T> {
[INFO] [stdout]     |
[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 E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `type-variance` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "53c09cfaeccc62425c76d9a165391ab08f1afadf171c226a73a965e1b4aae3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53c09cfaeccc62425c76d9a165391ab08f1afadf171c226a73a965e1b4aae3d6", kill_on_drop: false }`
[INFO] [stdout] 53c09cfaeccc62425c76d9a165391ab08f1afadf171c226a73a965e1b4aae3d6