[INFO] fetching crate nipper 0.1.9...
[INFO] building nipper-0.1.9 against master#657eefe2dcf18f76ac67a39945810128e101178c for pr-105577
[INFO] extracting crate nipper 0.1.9 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate nipper 0.1.9 on toolchain 657eefe2dcf18f76ac67a39945810128e101178c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+657eefe2dcf18f76ac67a39945810128e101178c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nipper 0.1.9
[INFO] finished tweaking crates.io crate nipper 0.1.9
[INFO] tweaked toml for crates.io crate nipper 0.1.9 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate nipper 0.1.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+657eefe2dcf18f76ac67a39945810128e101178c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+657eefe2dcf18f76ac67a39945810128e101178c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] warning: field `mathml_annotation_xml_integration_point` is never read
[INFO] [stdout]     --> src/dom_tree.rs:1000:5
[INFO] [stdout]      |
[INFO] [stdout] 988  | pub struct Element {
[INFO] [stdout]      |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 1000 |     mathml_annotation_xml_integration_point: bool,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Element` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.40s
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[INFO] [stdout] 8b251da11b0120dbe2a181950dbd15a5bd786328c96d8f276e063635cacf5f98
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[INFO] [stdout] warning: field `mathml_annotation_xml_integration_point` is never read
[INFO] [stdout]     --> src/dom_tree.rs:1000:5
[INFO] [stdout]      |
[INFO] [stdout] 988  | pub struct Element {
[INFO] [stdout]      |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 1000 |     mathml_annotation_xml_integration_point: bool,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Element` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling reqwest v0.9.24
[INFO] [stderr]    Compiling regex v1.4.4
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling hyper v0.13.10
[INFO] [stderr]    Compiling readability v0.1.5
[INFO] [stderr]    Compiling hyper-tls v0.4.3
[INFO] [stderr]    Compiling reqwest v0.10.10
[INFO] [stderr]    Compiling nipper v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> examples/readability2.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `min_read_time` and `max_read_time` are never read
[INFO] [stdout]    --> examples/readability.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 118 | struct MetaData {
[INFO] [stdout]     |        -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 123 |     min_read_time: Option<usize>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 124 |     max_read_time: Option<usize>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MetaData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mathml_annotation_xml_integration_point` is never read
[INFO] [stdout]     --> src/dom_tree.rs:1000:5
[INFO] [stdout]      |
[INFO] [stdout] 988  | pub struct Element {
[INFO] [stdout]      |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 1000 |     mathml_annotation_xml_integration_point: bool,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Element` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "8b251da11b0120dbe2a181950dbd15a5bd786328c96d8f276e063635cacf5f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b251da11b0120dbe2a181950dbd15a5bd786328c96d8f276e063635cacf5f98", kill_on_drop: false }`
[INFO] [stdout] 8b251da11b0120dbe2a181950dbd15a5bd786328c96d8f276e063635cacf5f98