[INFO] cloning repository https://github.com/utkarshkukreti/draco
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/utkarshkukreti/draco" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futkarshkukreti%2Fdraco", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futkarshkukreti%2Fdraco'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b210774443dd9ec5ac2abccd93e18c5cd036237
[INFO] checking utkarshkukreti/draco against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futkarshkukreti%2Fdraco" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/utkarshkukreti/draco on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/utkarshkukreti/draco
[INFO] finished tweaking git repo https://github.com/utkarshkukreti/draco
[INFO] tweaked toml for git repo https://github.com/utkarshkukreti/draco written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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] a64ec4be2e471ef9849d0d497014a979cb63fdee802d01b60e3a7211d3f5fa4f
[INFO] running `Command { std: "docker" "start" "-a" "a64ec4be2e471ef9849d0d497014a979cb63fdee802d01b60e3a7211d3f5fa4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a64ec4be2e471ef9849d0d497014a979cb63fdee802d01b60e3a7211d3f5fa4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a64ec4be2e471ef9849d0d497014a979cb63fdee802d01b60e3a7211d3f5fa4f", kill_on_drop: false }`
[INFO] [stdout] a64ec4be2e471ef9849d0d497014a979cb63fdee802d01b60e3a7211d3f5fa4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0656fb14b859cacf5aa9f9b136bb9e7a66d900493923bbe9a6c7aacc774437f2
[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" "0656fb14b859cacf5aa9f9b136bb9e7a66d900493923bbe9a6c7aacc774437f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.78
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling bumpalo v3.7.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.78
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking tracing-core v0.1.20
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking futures-channel v0.3.17
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tracing v0.1.28
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.28
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.78
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.78
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking js-sys v0.3.55
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking reqwest v0.10.10
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.28
[INFO] [stderr]     Checking web-sys v0.3.55
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.28
[INFO] [stderr]     Checking draco v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking svg_clock v0.1.0 (/opt/rustwide/workdir/examples/svg_clock)
[INFO] [stderr]     Checking jfb v0.1.0 (/opt/rustwide/workdir/examples/jfb)
[INFO] [stderr]     Checking router v0.1.0 (/opt/rustwide/workdir/examples/router)
[INFO] [stderr]     Checking counters v0.1.0 (/opt/rustwide/workdir/examples/counters)
[INFO] [stderr]     Checking ref_focus v0.1.0 (/opt/rustwide/workdir/examples/ref_focus)
[INFO] [stderr]     Checking router_basic v0.1.0 (/opt/rustwide/workdir/examples/router_basic)
[INFO] [stderr]     Checking local_storage v0.1.0 (/opt/rustwide/workdir/examples/local_storage)
[INFO] [stderr]     Checking form v0.1.0 (/opt/rustwide/workdir/examples/form)
[INFO] [stderr]     Checking counter v0.1.0 (/opt/rustwide/workdir/examples/counter)
[INFO] [stderr]     Checking github_commits v0.1.0 (/opt/rustwide/workdir/examples/github_commits)
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir/examples/hello_world)
[INFO] [stderr]     Checking mouse_tracker v0.1.0 (/opt/rustwide/workdir/examples/mouse_tracker)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `rand`
[INFO] [stdout]  --> benches/../examples/jfb/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{
[INFO] [stdout]   |     ^^^^ use of undeclared crate or module `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]  --> benches/../examples/jfb/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{
[INFO] [stdout]   |     ^^^^ use of undeclared crate or module `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `XorShiftRng`
[INFO] [stdout]   --> benches/../examples/jfb/src/lib.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |             rng: XorShiftRng::from_seed([0; 16]),
[INFO] [stdout]    |                  ^^^^^^^^^^^ use of undeclared type `XorShiftRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `XorShiftRng` in this scope
[INFO] [stdout]   --> benches/../examples/jfb/src/lib.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |     rng: XorShiftRng,
[INFO] [stdout]    |          ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `draco` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0656fb14b859cacf5aa9f9b136bb9e7a66d900493923bbe9a6c7aacc774437f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0656fb14b859cacf5aa9f9b136bb9e7a66d900493923bbe9a6c7aacc774437f2", kill_on_drop: false }`
[INFO] [stdout] 0656fb14b859cacf5aa9f9b136bb9e7a66d900493923bbe9a6c7aacc774437f2