[INFO] cloning repository https://github.com/Keats/webrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Keats/webrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeats%2Fwebrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeats%2Fwebrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2dae79ab398d9cbf705365f10793e7734427a876
[INFO] checking Keats/webrust against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeats%2Fwebrust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Keats/webrust on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Keats/webrust
[INFO] finished tweaking git repo https://github.com/Keats/webrust
[INFO] tweaked toml for git repo https://github.com/Keats/webrust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Keats/webrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded r2d2_postgres v0.18.0
[INFO] [stderr]   Downloaded postgres-protocol v0.6.1
[INFO] [stderr]   Downloaded postgres-types v0.2.1
[INFO] [stderr]   Downloaded postgres v0.19.1
[INFO] [stderr]   Downloaded quasi v0.20.1
[INFO] [stderr]   Downloaded tokio-postgres v0.7.1
[INFO] [stderr]   Downloaded postgres v0.10.2
[INFO] [stderr]   Downloaded quasi_macros v0.20.0
[INFO] [stderr]   Downloaded quasi_codegen v0.20.0
[INFO] [stderr]   Downloaded aster v0.27.0
[INFO] [stderr]   Downloaded serde_codegen v0.8.9
[INFO] [stderr]   Downloaded serde_codegen_internals v0.8.9
[INFO] [stderr]   Downloaded serde_macros v0.8.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] 6f6688c06104de832eba01c37bd05be90f496e48ba7e359d2228a9fbc8172398
[INFO] running `Command { std: "docker" "start" "-a" "6f6688c06104de832eba01c37bd05be90f496e48ba7e359d2228a9fbc8172398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f6688c06104de832eba01c37bd05be90f496e48ba7e359d2228a9fbc8172398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f6688c06104de832eba01c37bd05be90f496e48ba7e359d2228a9fbc8172398", kill_on_drop: false }`
[INFO] [stdout] 6f6688c06104de832eba01c37bd05be90f496e48ba7e359d2228a9fbc8172398
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9e0b4eaf238aaac3dfabf1e06865eb1906b2bf244cffcf4e3fae65bf45d55a4
[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" "b9e0b4eaf238aaac3dfabf1e06865eb1906b2bf244cffcf4e3fae65bf45d55a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking siphasher v0.3.5
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aster-0.27.0/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 `aster`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b9e0b4eaf238aaac3dfabf1e06865eb1906b2bf244cffcf4e3fae65bf45d55a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e0b4eaf238aaac3dfabf1e06865eb1906b2bf244cffcf4e3fae65bf45d55a4", kill_on_drop: false }`
[INFO] [stdout] b9e0b4eaf238aaac3dfabf1e06865eb1906b2bf244cffcf4e3fae65bf45d55a4