[INFO] cloning repository https://github.com/sambhavsaggi/browserception
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sambhavsaggi/browserception" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsambhavsaggi%2Fbrowserception", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsambhavsaggi%2Fbrowserception'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97d9d75483ab24f1c80fde5f7654f5c3141c8485
[INFO] testing sambhavsaggi/browserception against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsambhavsaggi%2Fbrowserception" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sambhavsaggi/browserception on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sambhavsaggi/browserception
[INFO] finished tweaking git repo https://github.com/sambhavsaggi/browserception
[INFO] tweaked toml for git repo https://github.com/sambhavsaggi/browserception written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/sambhavsaggi/browserception already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", 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] 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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5151500e24e0dd18faec7dec6c1e4dc72440668de15eefabac9b995aff0620f7
[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" "5151500e24e0dd18faec7dec6c1e4dc72440668de15eefabac9b995aff0620f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5151500e24e0dd18faec7dec6c1e4dc72440668de15eefabac9b995aff0620f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5151500e24e0dd18faec7dec6c1e4dc72440668de15eefabac9b995aff0620f7", kill_on_drop: false }`
[INFO] [stdout] 5151500e24e0dd18faec7dec6c1e4dc72440668de15eefabac9b995aff0620f7
[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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fac8a30e62f1efd429af274bc9c0143e6ceebfabd7c13aa8a14a6053c80c0e05
[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" "fac8a30e62f1efd429af274bc9c0143e6ceebfabd7c13aa8a14a6053c80c0e05", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]    Compiling smallbitvec v2.5.1
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling servo-media-traits v0.1.0 (https://github.com/servo/media#b23e7228)
[INFO] [stderr]    Compiling atomic_refcell v0.1.8
[INFO] [stderr]    Compiling speexdsp-resampler v0.1.0
[INFO] [stderr]    Compiling byte-slice-cast v0.2.0
[INFO] [stderr]    Compiling signpost v0.1.0 (https://github.com/pcwalton/signpost.git#7ed71250)
[INFO] [stderr]    Compiling urlencoding v1.3.3
[INFO] [stderr]    Compiling winit v0.24.0 (https://github.com/rust-windowing/winit.git?rev=4192d04a53202c199f94d1b7d883a34c9ad09272#4192d04a)
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling encoding_c_mem v0.2.6
[INFO] [stderr]    Compiling encoding_c v0.9.8
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling procedural-masquerade v0.1.7
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling surfman-chains-api v0.2.0
[INFO] [stderr]    Compiling xi-unicode v0.1.0
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.3
[INFO] [stderr]    Compiling unicode-script v0.5.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling ucd v0.1.1
[INFO] [stderr]    Compiling binary-space-partition v0.1.2
[INFO] [stderr]    Compiling tracy-rs v0.1.2
[INFO] [stderr]    Compiling sw-composite v0.7.14
[INFO] [stderr]    Compiling hyper-openssl v0.7.1
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling net v0.0.1 (https://github.com/servo/servo?rev=6734eab188b5264b8d0b11686f332d88205e8d1f#6734eab1)
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling script_plugins v0.0.1 (https://github.com/servo/servo?rev=6734eab188b5264b8d0b11686f332d88205e8d1f#6734eab1)
[INFO] [stderr]    Compiling libservo v0.0.1 (https://github.com/servo/servo?rev=6734eab188b5264b8d0b11686f332d88205e8d1f#6734eab1)
[INFO] [stderr]    Compiling swapper v0.1.0
[INFO] [stderr]    Compiling mitochondria v1.1.2
[INFO] [stderr]    Compiling ref_filter_map v1.0.1
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/6734eab/components/script_plugins/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate rustc_ast;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `script_plugins` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fac8a30e62f1efd429af274bc9c0143e6ceebfabd7c13aa8a14a6053c80c0e05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fac8a30e62f1efd429af274bc9c0143e6ceebfabd7c13aa8a14a6053c80c0e05", kill_on_drop: false }`
[INFO] [stdout] fac8a30e62f1efd429af274bc9c0143e6ceebfabd7c13aa8a14a6053c80c0e05