[INFO] fetching crate yaml-front-matter 0.1.0...
[INFO] testing yaml-front-matter-0.1.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate yaml-front-matter 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate yaml-front-matter 0.1.0 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 yaml-front-matter 0.1.0
[INFO] finished tweaking crates.io crate yaml-front-matter 0.1.0
[INFO] tweaked toml for crates.io crate yaml-front-matter 0.1.0 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] 6137b6e66a34651f5887f124de3803d2190e4aa0342d7f795f9a9f818c23af84
[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" "6137b6e66a34651f5887f124de3803d2190e4aa0342d7f795f9a9f818c23af84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6137b6e66a34651f5887f124de3803d2190e4aa0342d7f795f9a9f818c23af84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6137b6e66a34651f5887f124de3803d2190e4aa0342d7f795f9a9f818c23af84", kill_on_drop: false }`
[INFO] [stdout] 6137b6e66a34651f5887f124de3803d2190e4aa0342d7f795f9a9f818c23af84
[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] 72976fe24d448c1f74c21e10aec4bc9462e1ef841a74f46c1a2588db791c9598
[INFO] running `Command { std: "docker" "start" "-a" "72976fe24d448c1f74c21e10aec4bc9462e1ef841a74f46c1a2588db791c9598", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling serde_yaml v0.8.21
[INFO] [stderr]    Compiling yaml-front-matter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.68s
[INFO] running `Command { std: "docker" "inspect" "72976fe24d448c1f74c21e10aec4bc9462e1ef841a74f46c1a2588db791c9598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72976fe24d448c1f74c21e10aec4bc9462e1ef841a74f46c1a2588db791c9598", kill_on_drop: false }`
[INFO] [stdout] 72976fe24d448c1f74c21e10aec4bc9462e1ef841a74f46c1a2588db791c9598
[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] 991b3b38a1ca3cb43a0966e4a83a2849649624d2cba4a9cbc3cb798f5712dfbc
[INFO] running `Command { std: "docker" "start" "-a" "991b3b38a1ca3cb43a0966e4a83a2849649624d2cba4a9cbc3cb798f5712dfbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling yaml-front-matter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `__private::doc`
[INFO] [stdout]    --> src/lib.rs:165:30
[INFO] [stdout]     |
[INFO] [stdout] 165 |     use serde::{Deserialize, __private::doc};
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "991b3b38a1ca3cb43a0966e4a83a2849649624d2cba4a9cbc3cb798f5712dfbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991b3b38a1ca3cb43a0966e4a83a2849649624d2cba4a9cbc3cb798f5712dfbc", kill_on_drop: false }`
[INFO] [stdout] 991b3b38a1ca3cb43a0966e4a83a2849649624d2cba4a9cbc3cb798f5712dfbc
[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] 1e64754416ee490d33587ec9ef1fab2d7f04708010b2c086aba5f2e4edb9541a
[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" "1e64754416ee490d33587ec9ef1fab2d7f04708010b2c086aba5f2e4edb9541a", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `__private::doc`
[INFO] [stderr]    --> src/lib.rs:165:30
[INFO] [stderr]     |
[INFO] [stderr] 165 |     use serde::{Deserialize, __private::doc};
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `yaml-front-matter` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/yaml_front_matter-37bee81a05415ba2)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::retrieve_markdown_content ... ok
[INFO] [stdout] test test::retrieve_markdown_front_matter ... ok
[INFO] [stdout] test test::parses_markdown_into_document ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests yaml_front_matter
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 8) ... ignored
[INFO] [stdout] test src/lib.rs - (line 29) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 1.55s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1e64754416ee490d33587ec9ef1fab2d7f04708010b2c086aba5f2e4edb9541a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e64754416ee490d33587ec9ef1fab2d7f04708010b2c086aba5f2e4edb9541a", kill_on_drop: false }`
[INFO] [stdout] 1e64754416ee490d33587ec9ef1fab2d7f04708010b2c086aba5f2e4edb9541a