[INFO] fetching crate visiting_ref 0.2.0...
[INFO] testing visiting_ref-0.2.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate visiting_ref 0.2.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate visiting_ref 0.2.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate visiting_ref 0.2.0
[INFO] finished tweaking crates.io crate visiting_ref 0.2.0
[INFO] tweaked toml for crates.io crate visiting_ref 0.2.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3ca18c86ee8c685ba1cb6bd9e58e291f0d1797fed13c02fd4600cfba66d0401
[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" "d3ca18c86ee8c685ba1cb6bd9e58e291f0d1797fed13c02fd4600cfba66d0401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3ca18c86ee8c685ba1cb6bd9e58e291f0d1797fed13c02fd4600cfba66d0401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3ca18c86ee8c685ba1cb6bd9e58e291f0d1797fed13c02fd4600cfba66d0401", kill_on_drop: false }`
[INFO] [stdout] d3ca18c86ee8c685ba1cb6bd9e58e291f0d1797fed13c02fd4600cfba66d0401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f1acaf05b293838b0515f238a9f22c525db60995702e4fb10506d0d1d3b81bb0
[INFO] running `Command { std: "docker" "start" "-a" "f1acaf05b293838b0515f238a9f22c525db60995702e4fb10506d0d1d3b81bb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling visiting_ref v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.84s
[INFO] running `Command { std: "docker" "inspect" "f1acaf05b293838b0515f238a9f22c525db60995702e4fb10506d0d1d3b81bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1acaf05b293838b0515f238a9f22c525db60995702e4fb10506d0d1d3b81bb0", kill_on_drop: false }`
[INFO] [stdout] f1acaf05b293838b0515f238a9f22c525db60995702e4fb10506d0d1d3b81bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 620498bbfd6cf385ffb3953e7cdf9c43607f59d2b24fb2e5bdc8817171f014d0
[INFO] running `Command { std: "docker" "start" "-a" "620498bbfd6cf385ffb3953e7cdf9c43607f59d2b24fb2e5bdc8817171f014d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling visiting_ref v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.32s
[INFO] running `Command { std: "docker" "inspect" "620498bbfd6cf385ffb3953e7cdf9c43607f59d2b24fb2e5bdc8817171f014d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "620498bbfd6cf385ffb3953e7cdf9c43607f59d2b24fb2e5bdc8817171f014d0", kill_on_drop: false }`
[INFO] [stdout] 620498bbfd6cf385ffb3953e7cdf9c43607f59d2b24fb2e5bdc8817171f014d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6f33d6761b4a3b1f96e8673f851d34dab79564f835f9dd1c66be219ab17007e1
[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" "6f33d6761b4a3b1f96e8673f851d34dab79564f835f9dd1c66be219ab17007e1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/visiting_ref-f70718c03004a255)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::fmt_binary_impl_works ... ok
[INFO] [stdout] test tests::fmt_debug_impl_works ... ok
[INFO] [stdout] test tests::fmt_display_impl_works ... ok
[INFO] [stdout] test tests::fmt_lower_hex_impl_works ... ok
[INFO] [stdout] test tests::fmt_pointer_impl_works ... ok
[INFO] [stdout] test tests::fmt_octal_impl_works ... ok
[INFO] [stdout] test tests::fmt_upper_exp_impl_works ... ok
[INFO] [stderr]    Doc-tests visiting_ref
[INFO] [stdout] test tests::fmt_lower_exp_impl_works ... ok
[INFO] [stdout] test tests::fmt_upper_hex_impl_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - (line 253) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/lib.rs - (line 282) ... ok
[INFO] [stdout] test src/lib.rs - VisitingMut<T>::run_with (line 569) ... ok
[INFO] [stdout] test src/lib.rs - VisitingRef<T>::new (line 435) ... ok
[INFO] [stdout] test src/lib.rs - (line 81) ... ok
[INFO] [stdout] test src/lib.rs - (line 47) ... ok
[INFO] [stdout] test src/lib.rs - VisitingMut<T>::downgrade (line 546) ... ok
[INFO] [stdout] test src/lib.rs - VisitingMut<T>::new (line 521) ... ok
[INFO] [stdout] test src/lib.rs - VisitingRef<T>::run_with (line 459) ... ok
[INFO] [stdout] test src/lib.rs - (line 326) ... ok
[INFO] [stdout] test src/lib.rs - (line 123) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.56s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6f33d6761b4a3b1f96e8673f851d34dab79564f835f9dd1c66be219ab17007e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f33d6761b4a3b1f96e8673f851d34dab79564f835f9dd1c66be219ab17007e1", kill_on_drop: false }`
[INFO] [stdout] 6f33d6761b4a3b1f96e8673f851d34dab79564f835f9dd1c66be219ab17007e1