[INFO] fetching crate json-ld 0.2.0-alpha...
[INFO] checking json-ld-0.2.0-alpha against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate json-ld 0.2.0-alpha into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate json-ld 0.2.0-alpha on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json-ld 0.2.0-alpha
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate json-ld 0.2.0-alpha
[INFO] tweaked toml for crates.io crate json-ld 0.2.0-alpha written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate json-ld 0.2.0-alpha already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d4eee2e04474b9a75272452c042aefb52b2873c42fe44274a3176f1aedb4782
[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" "1d4eee2e04474b9a75272452c042aefb52b2873c42fe44274a3176f1aedb4782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d4eee2e04474b9a75272452c042aefb52b2873c42fe44274a3176f1aedb4782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d4eee2e04474b9a75272452c042aefb52b2873c42fe44274a3176f1aedb4782", kill_on_drop: false }`
[INFO] [stdout] 1d4eee2e04474b9a75272452c042aefb52b2873c42fe44274a3176f1aedb4782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 134558bdef6a00964eb22471647668b368c6a1547f76bffa132caf593785112e
[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" "134558bdef6a00964eb22471647668b368c6a1547f76bffa132caf593785112e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]    Compiling pct-str v1.0.2
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking json v0.12.3
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking mown v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking iref v1.1.5
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]    Compiling static-iref v1.0.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking stderrlog v0.4.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.12
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling iref-enum v1.0.0
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking json-ld v0.2.0-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `str_strip` has been stable since 1.45.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_strip)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `str_strip` has been stable since 1.45.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_strip)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.62s
[INFO] running `Command { std: "docker" "inspect" "134558bdef6a00964eb22471647668b368c6a1547f76bffa132caf593785112e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134558bdef6a00964eb22471647668b368c6a1547f76bffa132caf593785112e", kill_on_drop: false }`
[INFO] [stdout] 134558bdef6a00964eb22471647668b368c6a1547f76bffa132caf593785112e