[INFO] fetching crate rendersvg-meetmangukiya 0.9.1...
[INFO] checking rendersvg-meetmangukiya-0.9.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate rendersvg-meetmangukiya 0.9.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rendersvg-meetmangukiya 0.9.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rendersvg-meetmangukiya 0.9.1
[INFO] finished tweaking crates.io crate rendersvg-meetmangukiya 0.9.1
[INFO] tweaked toml for crates.io crate rendersvg-meetmangukiya 0.9.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate rendersvg-meetmangukiya 0.9.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded float-cmp v0.5.3
[INFO] [stderr]   Downloaded flate2 v1.0.14
[INFO] [stderr]   Downloaded cairo-rs v0.8.1
[INFO] [stderr]   Downloaded freetype v0.4.1
[INFO] [stderr]   Downloaded typed-arena v2.0.1
[INFO] [stderr]   Downloaded rctree v0.3.3
[INFO] [stderr]   Downloaded unicode-vo v0.1.0
[INFO] [stderr]   Downloaded usvg v0.9.0
[INFO] [stderr]   Downloaded xmlparser v0.13.1
[INFO] [stderr]   Downloaded simplecss v0.2.0
[INFO] [stderr]   Downloaded svgtypes v0.5.0
[INFO] [stderr]   Downloaded resvg v0.9.0
[INFO] [stderr]   Downloaded ttf-parser v0.3.0
[INFO] [stderr]   Downloaded euclid v0.20.10
[INFO] [stderr]   Downloaded resvg-skia v0.9.0
[INFO] [stderr]   Downloaded sw-composite v0.7.8
[INFO] [stderr]   Downloaded roxmltree v0.9.1
[INFO] [stderr]   Downloaded servo-freetype-sys v4.0.5
[INFO] [stderr]   Downloaded harfbuzz-sys v0.3.4
[INFO] [stderr]   Downloaded miniz_oxide v0.3.6
[INFO] [stderr]   Downloaded raqote v0.7.14
[INFO] [stderr]   Downloaded unicode-script v0.5.0
[INFO] [stderr]   Downloaded lyon_geom v0.15.2
[INFO] [stderr]   Downloaded svgfilters v0.1.0
[INFO] [stderr]   Downloaded fern v0.5.8
[INFO] [stderr]   Downloaded pico-args v0.2.0
[INFO] [stderr]   Downloaded resvg-qt v0.9.0
[INFO] [stderr]   Downloaded cairo-sys-rs v0.9.2
[INFO] [stderr]   Downloaded xmlwriter v0.1.0
[INFO] [stderr]   Downloaded harfbuzz_rs v1.0.1
[INFO] [stderr]   Downloaded rgb v0.8.17
[INFO] [stderr]   Downloaded kurbo v0.5.11
[INFO] [stderr]   Downloaded core-text v13.3.2
[INFO] [stderr]   Downloaded memmap2 v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af6bf1bdf537a4698dd8660613f842ae49548a025393849723fbc72081c76a0c
[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" "af6bf1bdf537a4698dd8660613f842ae49548a025393849723fbc72081c76a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af6bf1bdf537a4698dd8660613f842ae49548a025393849723fbc72081c76a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af6bf1bdf537a4698dd8660613f842ae49548a025393849723fbc72081c76a0c", kill_on_drop: false }`
[INFO] [stdout] af6bf1bdf537a4698dd8660613f842ae49548a025393849723fbc72081c76a0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 512d59d9ad03ecd29b586214faac6e506d181658f085d2a3509843cbe1b52cf8
[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" "512d59d9ad03ecd29b586214faac6e506d181658f085d2a3509843cbe1b52cf8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking xmlparser v0.13.1
[INFO] [stderr]     Checking rgb v0.8.17
[INFO] [stderr]     Checking ttf-parser v0.3.0
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking unicode-script v0.5.0
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]     Checking pico-args v0.2.0
[INFO] [stderr]     Checking kurbo v0.5.11
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking roxmltree v0.9.1
[INFO] [stderr]     Checking svgfilters v0.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking fern v0.5.8
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling harfbuzz-sys v0.3.4
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking harfbuzz_rs v1.0.1
[INFO] [stderr]     Checking usvg v0.9.0
[INFO] [stderr]     Checking resvg v0.9.0
[INFO] [stderr]     Checking rendersvg-meetmangukiya v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |           return Err(format!("{}", $msg));
[INFO] [stdout]    |           ------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 41 | /     let (args, opt) = match args::parse() {
[INFO] [stdout] 42 | |         Ok((args, opt)) => (args, opt),
[INFO] [stdout] 43 | |         Err(e) => {
[INFO] [stdout] 44 | |             args::print_help();
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |         }
[INFO] [stdout] 48 | |     };
[INFO] [stdout]    | |______^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |           return Err(format!("{}", $msg));
[INFO] [stdout]    |           ------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 41 | /     let (args, opt) = match args::parse() {
[INFO] [stdout] 42 | |         Ok((args, opt)) => (args, opt),
[INFO] [stdout] 43 | |         Err(e) => {
[INFO] [stdout] 44 | |             args::print_help();
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |         }
[INFO] [stdout] 48 | |     };
[INFO] [stdout]    | |______^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opt`
[INFO] [stdout]   --> src/main.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let (args, opt) = match args::parse() {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_opt`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `backend`
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let backend: Box<dyn Render> = match args.backend_name.as_str() {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_backend`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opt`
[INFO] [stdout]   --> src/main.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let (args, opt) = match args::parse() {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_opt`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `backend`
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let backend: Box<dyn Render> = match args.backend_name.as_str() {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_backend`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/args.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     let mut list = Vec::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/args.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     let mut list = Vec::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.04s
[INFO] running `Command { std: "docker" "inspect" "512d59d9ad03ecd29b586214faac6e506d181658f085d2a3509843cbe1b52cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512d59d9ad03ecd29b586214faac6e506d181658f085d2a3509843cbe1b52cf8", kill_on_drop: false }`
[INFO] [stdout] 512d59d9ad03ecd29b586214faac6e506d181658f085d2a3509843cbe1b52cf8