[INFO] fetching crate serde-pointer 0.2.0...
[INFO] testing serde-pointer-0.2.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate serde-pointer 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde-pointer 0.2.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-pointer 0.2.0
[INFO] finished tweaking crates.io crate serde-pointer 0.2.0
[INFO] tweaked toml for crates.io crate serde-pointer 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", 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] 97a554cf8119d53a69d9e46325c598b9ca7f1b9b7df5d4b21d8b551cbeb8c894
[INFO] running `Command { std: "docker" "start" "-a" "97a554cf8119d53a69d9e46325c598b9ca7f1b9b7df5d4b21d8b551cbeb8c894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97a554cf8119d53a69d9e46325c598b9ca7f1b9b7df5d4b21d8b551cbeb8c894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97a554cf8119d53a69d9e46325c598b9ca7f1b9b7df5d4b21d8b551cbeb8c894", kill_on_drop: false }`
[INFO] [stdout] 97a554cf8119d53a69d9e46325c598b9ca7f1b9b7df5d4b21d8b551cbeb8c894
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 1afe37cbb8b3c959b72f186bc335aefc7202c8facada49debd64edeb7bf48ed4
[INFO] running `Command { std: "docker" "start" "-a" "1afe37cbb8b3c959b72f186bc335aefc7202c8facada49debd64edeb7bf48ed4", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling serde-pointer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.47s
[INFO] running `Command { std: "docker" "inspect" "1afe37cbb8b3c959b72f186bc335aefc7202c8facada49debd64edeb7bf48ed4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1afe37cbb8b3c959b72f186bc335aefc7202c8facada49debd64edeb7bf48ed4", kill_on_drop: false }`
[INFO] [stdout] 1afe37cbb8b3c959b72f186bc335aefc7202c8facada49debd64edeb7bf48ed4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 9f973a3a95fb89173d00dd0c9da376469ff2a4aefd0f588c1abc3e95844b8f80
[INFO] running `Command { std: "docker" "start" "-a" "9f973a3a95fb89173d00dd0c9da376469ff2a4aefd0f588c1abc3e95844b8f80", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde-pointer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/traverse.rs:214:17
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 mem::replace(v, Value::String("boo".into()));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.15s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_pointer-89d0ddf926659e41)
[INFO] running `Command { std: "docker" "inspect" "9f973a3a95fb89173d00dd0c9da376469ff2a4aefd0f588c1abc3e95844b8f80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f973a3a95fb89173d00dd0c9da376469ff2a4aefd0f588c1abc3e95844b8f80", kill_on_drop: false }`
[INFO] [stdout] 9f973a3a95fb89173d00dd0c9da376469ff2a4aefd0f588c1abc3e95844b8f80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 859e26694b65780e9d27baa1bc7f275c7717028e16e224e2b5fcfb4bcbf58cba
[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" "859e26694b65780e9d27baa1bc7f275c7717028e16e224e2b5fcfb4bcbf58cba", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout] running 12 tests
[INFO] [stderr]    --> src/traverse.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |                 mem::replace(v, Value::String("boo".into()));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `serde-pointer` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_pointer-89d0ddf926659e41)
[INFO] [stdout] test parser::tests::empty_trailing_name ... ok
[INFO] [stdout] test parser::tests::escape_slash ... ok
[INFO] [stdout] test parser::tests::empty_name_in_middle ... ok
[INFO] [stdout] test parser::tests::index ... ok
[INFO] [stdout] test parser::tests::leading_zeros_as_string ... ok
[INFO] [stdout] test traverse::tests::find_new_element ... ok
[INFO] [stdout] test traverse::tests::can_mutate ... ok
[INFO] [stdout] test traverse::tests::finds_all_data ... ok
[INFO] [stdout] test parser::tests::fails_on_unknown_escape_seq ... ok
[INFO] [stdout] test parser::tests::escape_tilda ... ok
[INFO] [stdout] test parser::tests::empty_hash ... ok
[INFO] [stdout] test traverse::tests::finds_concrete_data ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde-pointer
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "859e26694b65780e9d27baa1bc7f275c7717028e16e224e2b5fcfb4bcbf58cba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859e26694b65780e9d27baa1bc7f275c7717028e16e224e2b5fcfb4bcbf58cba", kill_on_drop: false }`
[INFO] [stdout] 859e26694b65780e9d27baa1bc7f275c7717028e16e224e2b5fcfb4bcbf58cba