[INFO] cloning repository https://github.com/acfoltzer/exported-symbol-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/acfoltzer/exported-symbol-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facfoltzer%2Fexported-symbol-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facfoltzer%2Fexported-symbol-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13ee4d468beea510847d621e16ae644056f3fe26
[INFO] checking acfoltzer/exported-symbol-example against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facfoltzer%2Fexported-symbol-example" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/acfoltzer/exported-symbol-example 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] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/acfoltzer/exported-symbol-example
[INFO] finished tweaking git repo https://github.com/acfoltzer/exported-symbol-example
[INFO] tweaked toml for git repo https://github.com/acfoltzer/exported-symbol-example written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/acfoltzer/exported-symbol-example already has a lockfile, it will not be regenerated
[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-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef14237ed769fe6944818ae4e10952685fd9e270ca2f03cff5958229787c2fe6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ef14237ed769fe6944818ae4e10952685fd9e270ca2f03cff5958229787c2fe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef14237ed769fe6944818ae4e10952685fd9e270ca2f03cff5958229787c2fe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef14237ed769fe6944818ae4e10952685fd9e270ca2f03cff5958229787c2fe6", kill_on_drop: false }`
[INFO] [stdout] ef14237ed769fe6944818ae4e10952685fd9e270ca2f03cff5958229787c2fe6
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 977453c3eeb46ccc57e023a05f18c69c754f6af1bac41b27eceee03ad24d9eae
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "977453c3eeb46ccc57e023a05f18c69c754f6af1bac41b27eceee03ad24d9eae", kill_on_drop: false }`
[INFO] [stderr]     Checking module v0.1.0 (/opt/rustwide/workdir/module)
[INFO] [stderr]     Checking lib1 v0.1.0 (/opt/rustwide/workdir/lib1)
[INFO] [stderr]     Checking lib4 v0.1.0 (/opt/rustwide/workdir/lib4)
[INFO] [stderr]     Checking lib2 v0.1.0 (/opt/rustwide/workdir/lib2)
[INFO] [stderr]     Checking lib3 v0.1.0 (/opt/rustwide/workdir/lib3)
[INFO] [stderr]     Checking lib5 v0.1.0 (/opt/rustwide/workdir/lib5)
[INFO] [stderr]     Checking exported-symbol-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/broken4.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let t = &s as &lib4::T;
[INFO] [stdout]   |                    ^^^^^^^ help: use `dyn`: `dyn lib4::T`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "977453c3eeb46ccc57e023a05f18c69c754f6af1bac41b27eceee03ad24d9eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "977453c3eeb46ccc57e023a05f18c69c754f6af1bac41b27eceee03ad24d9eae", kill_on_drop: false }`
[INFO] [stdout] 977453c3eeb46ccc57e023a05f18c69c754f6af1bac41b27eceee03ad24d9eae