[INFO] cloning repository https://github.com/isurakka/truth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/isurakka/truth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisurakka%2Ftruth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisurakka%2Ftruth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a088d52f886d0cd00b4086bd71a3e08b4d99b3d
[INFO] documenting isurakka/truth against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisurakka%2Ftruth" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/isurakka/truth on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/isurakka/truth
[INFO] finished tweaking git repo https://github.com/isurakka/truth
[INFO] tweaked toml for git repo https://github.com/isurakka/truth written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/isurakka/truth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (rocket_contrib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0027afdb1ed7a41dfc6527c30c28e20a2f55b088edd0127dcbabe35bff37477b
[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" "0027afdb1ed7a41dfc6527c30c28e20a2f55b088edd0127dcbabe35bff37477b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0027afdb1ed7a41dfc6527c30c28e20a2f55b088edd0127dcbabe35bff37477b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0027afdb1ed7a41dfc6527c30c28e20a2f55b088edd0127dcbabe35bff37477b", kill_on_drop: false }`
[INFO] [stdout] 0027afdb1ed7a41dfc6527c30c28e20a2f55b088edd0127dcbabe35bff37477b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] 31cf3a9599c26b47727cb4750344bb674417fa5b35f5c2af99b259c2c63f985c
[INFO] running `Command { std: "docker" "start" "-a" "31cf3a9599c26b47727cb4750344bb674417fa5b35f5c2af99b259c2c63f985c", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (rocket_contrib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking quick-error v1.1.0
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]    Compiling rocket_codegen v0.1.5
[INFO] [stderr]    Compiling solicit v0.4.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket_codegen-0.1.5/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rocket_codegen`.
[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" "31cf3a9599c26b47727cb4750344bb674417fa5b35f5c2af99b259c2c63f985c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31cf3a9599c26b47727cb4750344bb674417fa5b35f5c2af99b259c2c63f985c", kill_on_drop: false }`
[INFO] [stdout] 31cf3a9599c26b47727cb4750344bb674417fa5b35f5c2af99b259c2c63f985c