[INFO] fetching crate serde_header 0.2.0...
[INFO] testing serde_header-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serde_header 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde_header 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_header 0.2.0
[INFO] finished tweaking crates.io crate serde_header 0.2.0
[INFO] tweaked toml for crates.io crate serde_header 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea4040a0f0a08458a7924661fc84244745977c62fd1d9be6353d621a46b2c94b
[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" "ea4040a0f0a08458a7924661fc84244745977c62fd1d9be6353d621a46b2c94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea4040a0f0a08458a7924661fc84244745977c62fd1d9be6353d621a46b2c94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea4040a0f0a08458a7924661fc84244745977c62fd1d9be6353d621a46b2c94b", kill_on_drop: false }`
[INFO] [stdout] ea4040a0f0a08458a7924661fc84244745977c62fd1d9be6353d621a46b2c94b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bbed32e32469e9c2e1eb6968beb3c8bbb8d5fd8be8f711c98ee7a6ac3712759
[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" "9bbed32e32469e9c2e1eb6968beb3c8bbb8d5fd8be8f711c98ee7a6ac3712759", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling serde_header v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `super::HeaderMap`
[INFO] [stdout]  --> src/de.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::{Error, Result, HeaderMap};
[INFO] [stdout]   |                            ^^^^^^^^^ no `HeaderMap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `http`
[INFO] [stdout]   --> src/error.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl From<http::header::InvalidHeaderValue> for Error {
[INFO] [stdout]    |           ^^^^ use of undeclared crate or module `http`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `http`
[INFO] [stdout]   --> src/error.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn from(e: http::header::InvalidHeaderValue) -> Self {
[INFO] [stdout]    |                ^^^^ use of undeclared crate or module `http`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `http`
[INFO] [stdout]   --> src/error.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl From<http::header::InvalidHeaderName> for Error {
[INFO] [stdout]    |           ^^^^ use of undeclared crate or module `http`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `http`
[INFO] [stdout]   --> src/error.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn from(e: http::header::InvalidHeaderName) -> Self {
[INFO] [stdout]    |                ^^^^ use of undeclared crate or module `http`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HeaderMap` in module `super`
[INFO] [stdout]   --> src/de.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     inner: super::HeaderMap<'de>,
[INFO] [stdout]    |                   ^^^^^^^^^ not found in `super`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 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 `serde_header`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9bbed32e32469e9c2e1eb6968beb3c8bbb8d5fd8be8f711c98ee7a6ac3712759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bbed32e32469e9c2e1eb6968beb3c8bbb8d5fd8be8f711c98ee7a6ac3712759", kill_on_drop: false }`
[INFO] [stdout] 9bbed32e32469e9c2e1eb6968beb3c8bbb8d5fd8be8f711c98ee7a6ac3712759