[INFO] cloning repository https://github.com/lf-/object-safety-issue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lf-/object-safety-issue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fobject-safety-issue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fobject-safety-issue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 482e4d19808b7eff6a1a7cbf952d95469dd019d0
[INFO] checking lf-/object-safety-issue against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fobject-safety-issue" "/workspace/builds/worker-108/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-108/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lf-/object-safety-issue on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lf-/object-safety-issue
[INFO] finished tweaking git repo https://github.com/lf-/object-safety-issue
[INFO] tweaked toml for git repo https://github.com/lf-/object-safety-issue written to /workspace/builds/worker-108/source/Cargo.toml
[INFO] crate git repo https://github.com/lf-/object-safety-issue already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e4f8d1a3e0cd23f84b180ad734c8ebe57e282bc4ea7cdb24517cbe459af2e25
[INFO] running `Command { std: "docker" "start" "-a" "4e4f8d1a3e0cd23f84b180ad734c8ebe57e282bc4ea7cdb24517cbe459af2e25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e4f8d1a3e0cd23f84b180ad734c8ebe57e282bc4ea7cdb24517cbe459af2e25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e4f8d1a3e0cd23f84b180ad734c8ebe57e282bc4ea7cdb24517cbe459af2e25", kill_on_drop: false }`
[INFO] [stdout] 4e4f8d1a3e0cd23f84b180ad734c8ebe57e282bc4ea7cdb24517cbe459af2e25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce69454a1b8124a68e1de5a37d9440addcffe5849810cd5b6755dda1749e0552
[INFO] running `Command { std: "docker" "start" "-a" "ce69454a1b8124a68e1de5a37d9440addcffe5849810cd5b6755dda1749e0552", kill_on_drop: false }`
[INFO] [stderr]     Checking v v0.1.0 (/opt/rustwide/workdir/v)
[INFO] [stderr]     Checking play-si1zd_4v v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0038]: the trait `T2` cannot be made into an object
[INFO] [stdout]   --> src/main.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn f(a: Box<dyn T2>) {}
[INFO] [stdout]    |             ^^^^^^ `T2` cannot be made into an object
[INFO] [stdout]    |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]   --> src/main.rs:1:11
[INFO] [stdout]    |
[INFO] [stdout] 1  | trait T2: v::T1 {
[INFO] [stdout]    |       --  ^^^^^ ...because it requires `Self: Sized`
[INFO] [stdout]    |       |
[INFO] [stdout]    |       this trait cannot be made into an object...
[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 E0038`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `play-si1zd_4v` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0038]: the trait `T2` cannot be made into an object
[INFO] [stdout]   --> src/main.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn f(a: Box<dyn T2>) {}
[INFO] [stdout]    |             ^^^^^^ `T2` cannot be made into an object
[INFO] [stdout]    |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]   --> src/main.rs:1:11
[INFO] [stdout]    |
[INFO] [stdout] 1  | trait T2: v::T1 {
[INFO] [stdout]    |       --  ^^^^^ ...because it requires `Self: Sized`
[INFO] [stdout]    |       |
[INFO] [stdout]    |       this trait cannot be made into an object...
[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 E0038`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ce69454a1b8124a68e1de5a37d9440addcffe5849810cd5b6755dda1749e0552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce69454a1b8124a68e1de5a37d9440addcffe5849810cd5b6755dda1749e0552", kill_on_drop: false }`
[INFO] [stdout] ce69454a1b8124a68e1de5a37d9440addcffe5849810cd5b6755dda1749e0552
