[INFO] fetching crate jason 0.2.0...
[INFO] testing jason-0.2.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate jason 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate jason 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 jason 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate jason 0.2.0
[INFO] tweaked toml for crates.io crate jason 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate jason 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.7.6
[INFO] [stderr]   Downloaded tokio v1.0.1
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26b540f964e8cc78edbfef5c50057051bf85f1251bfe5fdd746cc66cf0f85d3f
[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" "26b540f964e8cc78edbfef5c50057051bf85f1251bfe5fdd746cc66cf0f85d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26b540f964e8cc78edbfef5c50057051bf85f1251bfe5fdd746cc66cf0f85d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26b540f964e8cc78edbfef5c50057051bf85f1251bfe5fdd746cc66cf0f85d3f", kill_on_drop: false }`
[INFO] [stdout] 26b540f964e8cc78edbfef5c50057051bf85f1251bfe5fdd746cc66cf0f85d3f
[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=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] [stdout] ff81db0968758c22ecfb163c9b1df7d8acac081962bae46289e7540df1bd671a
[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" "ff81db0968758c22ecfb163c9b1df7d8acac081962bae46289e7540df1bd671a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling jason v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.88s
[INFO] running `Command { std: "docker" "inspect" "ff81db0968758c22ecfb163c9b1df7d8acac081962bae46289e7540df1bd671a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff81db0968758c22ecfb163c9b1df7d8acac081962bae46289e7540df1bd671a", kill_on_drop: false }`
[INFO] [stdout] ff81db0968758c22ecfb163c9b1df7d8acac081962bae46289e7540df1bd671a
[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=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] [stdout] 01fdc81e7656b19957d95397345f4639a7fc3148ecd4758abac8bcd1ad35bdb3
[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" "01fdc81e7656b19957d95397345f4639a7fc3148ecd4758abac8bcd1ad35bdb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling bytes v1.0.0
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tokio v1.0.1
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling http v0.2.2
[INFO] [stderr]    Compiling http-body v0.4.0
[INFO] [stderr]    Compiling hyper v0.14.2
[INFO] [stderr]    Compiling jason v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 22.20s
[INFO] running `Command { std: "docker" "inspect" "01fdc81e7656b19957d95397345f4639a7fc3148ecd4758abac8bcd1ad35bdb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01fdc81e7656b19957d95397345f4639a7fc3148ecd4758abac8bcd1ad35bdb3", kill_on_drop: false }`
[INFO] [stdout] 01fdc81e7656b19957d95397345f4639a7fc3148ecd4758abac8bcd1ad35bdb3
[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=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] f0aa50fa416cfcb8f20982948ada48c406d7f32a1dd8bad59d4d27734bb59fb1
[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" "f0aa50fa416cfcb8f20982948ada48c406d7f32a1dd8bad59d4d27734bb59fb1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jason-378a16cbe84f4c8f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::deserialize_error_res ... ok
[INFO] [stdout] test tests::deserialize_result_res ... ok
[INFO] [stdout] test tests::serialize_requests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests jason
[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" "f0aa50fa416cfcb8f20982948ada48c406d7f32a1dd8bad59d4d27734bb59fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0aa50fa416cfcb8f20982948ada48c406d7f32a1dd8bad59d4d27734bb59fb1", kill_on_drop: false }`
[INFO] [stdout] f0aa50fa416cfcb8f20982948ada48c406d7f32a1dd8bad59d4d27734bb59fb1