[INFO] fetching crate headers-ext 0.0.4...
[INFO] checking headers-ext-0.0.4 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate headers-ext 0.0.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate headers-ext 0.0.4 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate headers-ext 0.0.4
[INFO] finished tweaking crates.io crate headers-ext 0.0.4
[INFO] tweaked toml for crates.io crate headers-ext 0.0.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded headers-derive v0.0.2
[INFO] [stderr]   Downloaded headers-core v0.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1816aa298496f6ff500f328690771cc6d357cd4c0bace75584d3a49b34d1c5f0
[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" "1816aa298496f6ff500f328690771cc6d357cd4c0bace75584d3a49b34d1c5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1816aa298496f6ff500f328690771cc6d357cd4c0bace75584d3a49b34d1c5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1816aa298496f6ff500f328690771cc6d357cd4c0bace75584d3a49b34d1c5f0", kill_on_drop: false }`
[INFO] [stdout] 1816aa298496f6ff500f328690771cc6d357cd4c0bace75584d3a49b34d1c5f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--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] d7ff754b966ce9a81370ab3954e3ff8f309229888b8e5066e85b30e459b4bca7
[INFO] running `Command { std: "docker" "start" "-a" "d7ff754b966ce9a81370ab3954e3ff8f309229888b8e5066e85b30e459b4bca7", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking headers-core v0.0.2
[INFO] [stderr]    Compiling headers-derive v0.0.2
[INFO] [stderr]     Checking headers-ext v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_static`
[INFO] [stdout]   --> src/util/entity.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn from_static(bytes: &'static str) -> EntityTag {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tag`
[INFO] [stdout]   --> src/util/entity.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn tag(&self) -> &[u8] {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_weak`
[INFO] [stdout]   --> src/util/entity.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn is_weak(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `strong_eq`
[INFO] [stdout]   --> src/util/entity.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn strong_eq(&self, other: &EntityTag) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `weak_eq`
[INFO] [stdout]    --> src/util/entity.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn weak_eq(&self, other: &EntityTag) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `strong_ne`
[INFO] [stdout]    --> src/util/entity.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn strong_ne(&self, other: &EntityTag) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `weak_ne`
[INFO] [stdout]    --> src/util/entity.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn weak_ne(&self, other: &EntityTag) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.50s
[INFO] running `Command { std: "docker" "inspect" "d7ff754b966ce9a81370ab3954e3ff8f309229888b8e5066e85b30e459b4bca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ff754b966ce9a81370ab3954e3ff8f309229888b8e5066e85b30e459b4bca7", kill_on_drop: false }`
[INFO] [stdout] d7ff754b966ce9a81370ab3954e3ff8f309229888b8e5066e85b30e459b4bca7