[INFO] fetching crate destream_json 0.8.1...
[INFO] testing destream_json-0.8.1 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate destream_json 0.8.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate destream_json 0.8.1 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate destream_json 0.8.1
[INFO] finished tweaking crates.io crate destream_json 0.8.1
[INFO] tweaked toml for crates.io crate destream_json 0.8.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] d4bb6d85c1956c12a166644ebd62ce25b391eb41d997b3736a440cde6666bd63
[INFO] running `Command { std: "docker" "start" "-a" "d4bb6d85c1956c12a166644ebd62ce25b391eb41d997b3736a440cde6666bd63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4bb6d85c1956c12a166644ebd62ce25b391eb41d997b3736a440cde6666bd63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4bb6d85c1956c12a166644ebd62ce25b391eb41d997b3736a440cde6666bd63", kill_on_drop: false }`
[INFO] [stdout] d4bb6d85c1956c12a166644ebd62ce25b391eb41d997b3736a440cde6666bd63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e8e83a24a1fd640b5836bae3fe8faa9714b376eaa9d15ce455210bb852e90a5
[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" "6e8e83a24a1fd640b5836bae3fe8faa9714b376eaa9d15ce455210bb852e90a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling futures-executor v0.3.16
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling destream v0.5.0
[INFO] [stderr]    Compiling destream_json v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.38s
[INFO] running `Command { std: "docker" "inspect" "6e8e83a24a1fd640b5836bae3fe8faa9714b376eaa9d15ce455210bb852e90a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e8e83a24a1fd640b5836bae3fe8faa9714b376eaa9d15ce455210bb852e90a5", kill_on_drop: false }`
[INFO] [stdout] 6e8e83a24a1fd640b5836bae3fe8faa9714b376eaa9d15ce455210bb852e90a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc97e0e2f782251cd76264cc8bd681051577b4e57e5fb197e5782f373f8fb0d7
[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" "bc97e0e2f782251cd76264cc8bd681051577b4e57e5fb197e5782f373f8fb0d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling safecast v0.1.1
[INFO] [stderr]    Compiling collate v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling number-general v0.3.9
[INFO] [stderr]    Compiling tokio-test v0.4.2
[INFO] [stderr]    Compiling destream_json v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `MapAccess`
[INFO] [stdout]   --> src/lib.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use destream::{MapAccess, SeqAccess};
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeqAccess`
[INFO] [stdout]   --> src/lib.rs:51:31
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use destream::{MapAccess, SeqAccess};
[INFO] [stdout]    |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.94s
[INFO] running `Command { std: "docker" "inspect" "bc97e0e2f782251cd76264cc8bd681051577b4e57e5fb197e5782f373f8fb0d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc97e0e2f782251cd76264cc8bd681051577b4e57e5fb197e5782f373f8fb0d7", kill_on_drop: false }`
[INFO] [stdout] bc97e0e2f782251cd76264cc8bd681051577b4e57e5fb197e5782f373f8fb0d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", 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] f17a08d8cf6006658694e235b997da671e86d588043c650d455774761fa6fc84
[INFO] running `Command { std: "docker" "start" "-a" "f17a08d8cf6006658694e235b997da671e86d588043c650d455774761fa6fc84", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `MapAccess`
[INFO] [stderr]   --> src/lib.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 51 |     use destream::{MapAccess, SeqAccess};
[INFO] [stderr]    |                    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SeqAccess`
[INFO] [stderr]   --> src/lib.rs:51:31
[INFO] [stderr]    |
[INFO] [stderr] 51 |     use destream::{MapAccess, SeqAccess};
[INFO] [stderr]    |                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `destream_json` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/destream_json-dc6495cff22ea0f5)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_bytes ... ok
[INFO] [stdout] test tests::test_array ... ok
[INFO] [stdout] test tests::test_err ... ok
[INFO] [stdout] test tests::test_map ... ok
[INFO] [stdout] test tests::test_seq ... ok
[INFO] [stdout] test tests::test_json_primitives ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests destream_json
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.55s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f17a08d8cf6006658694e235b997da671e86d588043c650d455774761fa6fc84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f17a08d8cf6006658694e235b997da671e86d588043c650d455774761fa6fc84", kill_on_drop: false }`
[INFO] [stdout] f17a08d8cf6006658694e235b997da671e86d588043c650d455774761fa6fc84