[INFO] updating cached repository https://github.com/jaroslaw-weber/learn-korean-tools
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6d7c879950bb102405f8f2ff92a538691292c7c7
[INFO] checking jaroslaw-weber/learn-korean-tools against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaroslaw-weber%2Flearn-korean-tools" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jaroslaw-weber/learn-korean-tools on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jaroslaw-weber/learn-korean-tools
[INFO] finished tweaking git repo https://github.com/jaroslaw-weber/learn-korean-tools
[INFO] tweaked toml for git repo https://github.com/jaroslaw-weber/learn-korean-tools written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/jaroslaw-weber/learn-korean-tools already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aae54e874a3cb64111dc73f6088fe6c9348155becf0ba6ad49fdcc73014ea087
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "aae54e874a3cb64111dc73f6088fe6c9348155becf0ba6ad49fdcc73014ea087"`
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]    Compiling safemem v0.3.2
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking pest v0.4.1
[INFO] [stderr]     Checking state v0.2.2
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]     Checking term-painter v0.2.4
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking cookie v0.6.2
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]    Compiling rocket v0.2.11
[INFO] [stderr]    Compiling rocket_codegen v0.2.11
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking hmac v0.5.0
[INFO] [stderr]     Checking error-chain v0.8.1
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking postgres-protocol v0.3.2
[INFO] [stderr] error[E0432]: unresolved import `std::net::lookup_host`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket-0.2.11/src/config/config.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::net::{IpAddr, lookup_host};
[INFO] [stderr]   |                        ^^^^^^^^^^^ no `lookup_host` in `net`
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations needed: cannot resolve `std::borrow::Cow<'_, str>: std::borrow::Borrow<_>`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket-0.2.11/src/http/header.rs:480:47
[INFO] [stderr]     |
[INFO] [stderr] 480 |                 Header::new(key.as_str(), val.borrow())
[INFO] [stderr]     |                                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0283, E0432.
[INFO] [stderr] For more information about an error, try `rustc --explain E0283`.
[INFO] [stderr] error: could not compile `rocket`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "aae54e874a3cb64111dc73f6088fe6c9348155becf0ba6ad49fdcc73014ea087"`
[INFO] running `"docker" "rm" "-f" "aae54e874a3cb64111dc73f6088fe6c9348155becf0ba6ad49fdcc73014ea087"`
[INFO] [stdout] aae54e874a3cb64111dc73f6088fe6c9348155becf0ba6ad49fdcc73014ea087