[INFO] cloning repository https://github.com/ochio/toy-browser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ochio/toy-browser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fochio%2Ftoy-browser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fochio%2Ftoy-browser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62ea5df59ace8ab9a3ec45742f6c4dda0b7039ed
[INFO] checking ochio/toy-browser against 011c518242557d21690f7936b5812318dc2fec47 for pr-159877
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fochio%2Ftoy-browser" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ochio/toy-browser
[INFO] finished tweaking git repo https://github.com/ochio/toy-browser
[INFO] tweaked toml for git repo https://github.com/ochio/toy-browser written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ochio/toy-browser on toolchain 011c518242557d21690f7936b5812318dc2fec47
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ochio/toy-browser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.8.0
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded image v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102
[INFO] running `Command { std: "docker" "start" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102" "/opt/rustwide/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102" "/opt/rustwide/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking toy-browser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `None`
[INFO] [stdout]  --> src/layout.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 |         Display::{Block, Inline, None},
[INFO] [stdout]   |                                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `None`
[INFO] [stdout]  --> src/layout.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 |         Display::{Block, Inline, None},
[INFO] [stdout]   |                                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `style`
[INFO] [stdout]  --> src/painting.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     style,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `style`
[INFO] [stdout]  --> src/painting.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     style,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/painting.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 for y in (y0..y1) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -                 for y in (y0..y1) {
[INFO] [stdout] 45 +                 for y in y0..y1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/painting.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 for y in (y0..y1) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -                 for y in (y0..y1) {
[INFO] [stdout] 45 +                 for y in y0..y1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/painting.rs:46:30
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     for x in (x0..x1) {
[INFO] [stdout]    |                              ^      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 46 -                     for x in (x0..x1) {
[INFO] [stdout] 46 +                     for x in x0..x1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/painting.rs:46:30
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     for x in (x0..x1) {
[INFO] [stdout]    |                              ^      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 46 -                     for x in (x0..x1) {
[INFO] [stdout] 46 +                     for x in x0..x1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/layout.rs:153:13
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let mut padding_left = style.lookup("padding-left", "margin", &zero);
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/layout.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut padding_right = style.lookup("padding-right", "margin", &zero);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `DisplayNone`
[INFO] [stdout]    --> src/layout.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |         DisplayNone => panic!("Root node has display: none"),
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_DisplayNone`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `DisplayNone`
[INFO] [stdout]    --> src/layout.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |             DisplayNone => {}
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_DisplayNone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/layout.rs:153:13
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let mut padding_left = style.lookup("padding-left", "margin", &zero);
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/layout.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut padding_right = style.lookup("padding-right", "margin", &zero);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `DisplayNone`
[INFO] [stdout]    --> src/layout.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |         DisplayNone => panic!("Root node has display: none"),
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_DisplayNone`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `DisplayNone`
[INFO] [stdout]    --> src/layout.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |             DisplayNone => {}
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_DisplayNone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Clamp` is never used
[INFO] [stdout]    --> src/painting.rs:152:7
[INFO] [stdout]     |
[INFO] [stdout] 152 | trait Clamp {
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node` is never read
[INFO] [stdout]   --> src/style.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct StyledNode<'a> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 18 |     node: &'a Node,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StyledNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/layout.rs:199:21
[INFO] [stdout]     |
[INFO] [stdout] 199 |                     margin_left == Length(0.0, Px);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 199 |                     let _ = margin_left == Length(0.0, Px);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/layout.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     margin_right == Length(0.0, Px);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     let _ = margin_right == Length(0.0, Px);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DisplayNone` should have a snake case name
[INFO] [stdout]    --> src/layout.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |         DisplayNone => panic!("Root node has display: none"),
[INFO] [stdout]     |         ^^^^^^^^^^^ help: convert the identifier to snake case: `display_none`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DisplayNone` should have a snake case name
[INFO] [stdout]    --> src/layout.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |             DisplayNone => {}
[INFO] [stdout]     |             ^^^^^^^^^^^ help: convert the identifier to snake case: `display_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Clamp` is never used
[INFO] [stdout]    --> src/painting.rs:152:7
[INFO] [stdout]     |
[INFO] [stdout] 152 | trait Clamp {
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node` is never read
[INFO] [stdout]   --> src/style.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct StyledNode<'a> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 18 |     node: &'a Node,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StyledNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/layout.rs:199:21
[INFO] [stdout]     |
[INFO] [stdout] 199 |                     margin_left == Length(0.0, Px);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 199 |                     let _ = margin_left == Length(0.0, Px);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/layout.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     margin_right == Length(0.0, Px);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     let _ = margin_right == Length(0.0, Px);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DisplayNone` should have a snake case name
[INFO] [stdout]    --> src/layout.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |         DisplayNone => panic!("Root node has display: none"),
[INFO] [stdout]     |         ^^^^^^^^^^^ help: convert the identifier to snake case: `display_none`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DisplayNone` should have a snake case name
[INFO] [stdout]    --> src/layout.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |             DisplayNone => {}
[INFO] [stdout]     |             ^^^^^^^^^^^ help: convert the identifier to snake case: `display_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.74s
[INFO] running `Command { std: "docker" "inspect" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102", kill_on_drop: false }`
[INFO] [stdout] 6cdd390538ea42cf5280987d75c2da44f7e431af5164a2c4ca449c44288b9102
