[INFO] fetching crate serde-pointer 0.2.0...
[INFO] testing serde-pointer-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serde-pointer 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate serde-pointer 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ddc1244b5c12194700d9c74680f6d6576cfdec1f17d2b505a9bd45367c2dded
[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" "5ddc1244b5c12194700d9c74680f6d6576cfdec1f17d2b505a9bd45367c2dded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ddc1244b5c12194700d9c74680f6d6576cfdec1f17d2b505a9bd45367c2dded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ddc1244b5c12194700d9c74680f6d6576cfdec1f17d2b505a9bd45367c2dded", kill_on_drop: false }`
[INFO] [stdout] 5ddc1244b5c12194700d9c74680f6d6576cfdec1f17d2b505a9bd45367c2dded
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bc394b67ad38254a205af30e7f8e67541d885f104f41f6b2922873c1ea90971
[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" "7bc394b67ad38254a205af30e7f8e67541d885f104f41f6b2922873c1ea90971", kill_on_drop: false }`
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling serde-value v0.6.0
[INFO] [stderr]    Compiling serde-pointer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.33s
[INFO] running `Command { std: "docker" "inspect" "7bc394b67ad38254a205af30e7f8e67541d885f104f41f6b2922873c1ea90971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc394b67ad38254a205af30e7f8e67541d885f104f41f6b2922873c1ea90971", kill_on_drop: false }`
[INFO] [stdout] 7bc394b67ad38254a205af30e7f8e67541d885f104f41f6b2922873c1ea90971
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c778ee318f47b8e64024a5783dbf6d83c1aa4a0dc01d711b1a271d8f02c8f3b
[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" "9c778ee318f47b8e64024a5783dbf6d83c1aa4a0dc01d711b1a271d8f02c8f3b", 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 1.78s
[INFO] running `Command { std: "docker" "inspect" "9c778ee318f47b8e64024a5783dbf6d83c1aa4a0dc01d711b1a271d8f02c8f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c778ee318f47b8e64024a5783dbf6d83c1aa4a0dc01d711b1a271d8f02c8f3b", kill_on_drop: false }`
[INFO] [stdout] 9c778ee318f47b8e64024a5783dbf6d83c1aa4a0dc01d711b1a271d8f02c8f3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4b0678db576926c9c3aba8919c0b28deb2dbc8af70b9c5effe7b261cac606893
[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" "4b0678db576926c9c3aba8919c0b28deb2dbc8af70b9c5effe7b261cac606893", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_pointer-b6242774e530e55e
[INFO] [stdout] running 12 tests
[INFO] [stdout] test parser::tests::empty_hash ... ok
[INFO] [stdout] test parser::tests::escape_slash ... ok
[INFO] [stdout] test parser::tests::empty_name_in_middle ... ok
[INFO] [stdout] test parser::tests::empty_trailing_name ... ok
[INFO] [stdout] test parser::tests::index ... ok
[INFO] [stdout] test parser::tests::leading_zeros_as_string ... ok
[INFO] [stdout] test traverse::tests::can_mutate ... ok
[INFO] [stdout] test parser::tests::fails_on_unknown_escape_seq ... ok
[INFO] [stdout] test traverse::tests::finds_concrete_data ... ok
[INFO] [stdout] test traverse::tests::find_new_element ... ok
[INFO] [stdout] test parser::tests::escape_tilda ... ok
[INFO] [stderr]    Doc-tests serde-pointer
[INFO] [stdout] test traverse::tests::finds_all_data ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4b0678db576926c9c3aba8919c0b28deb2dbc8af70b9c5effe7b261cac606893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0678db576926c9c3aba8919c0b28deb2dbc8af70b9c5effe7b261cac606893", kill_on_drop: false }`
[INFO] [stdout] 4b0678db576926c9c3aba8919c0b28deb2dbc8af70b9c5effe7b261cac606893