[INFO] fetching crate skribo 0.1.0...
[INFO] testing skribo-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate skribo 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate skribo 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skribo 0.1.0
[INFO] finished tweaking crates.io crate skribo 0.1.0
[INFO] tweaked toml for crates.io crate skribo 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate skribo 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.36
[INFO] [stderr]   Downloaded rustc-demangle v0.1.14
[INFO] [stderr]   Downloaded backtrace v0.3.15
[INFO] [stderr]   Downloaded libc v0.2.54
[INFO] [stderr]   Downloaded bitflags v1.0.5
[INFO] [stderr]   Downloaded core-text v13.2.0
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] [stderr]   Downloaded pathfinder_geometry v0.5.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] [stderr]   Downloaded cmake v0.1.39
[INFO] [stderr]   Downloaded servo-fontconfig-sys v4.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0e7d2333b1cf0b9f4a99669ca5dce238666a18625be5c72e2f164772fc9c153
[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" "e0e7d2333b1cf0b9f4a99669ca5dce238666a18625be5c72e2f164772fc9c153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0e7d2333b1cf0b9f4a99669ca5dce238666a18625be5c72e2f164772fc9c153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0e7d2333b1cf0b9f4a99669ca5dce238666a18625be5c72e2f164772fc9c153", kill_on_drop: false }`
[INFO] [stdout] e0e7d2333b1cf0b9f4a99669ca5dce238666a18625be5c72e2f164772fc9c153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cd865e4ab3531537bd520d06181e63607f973e0c732b9c23c31d2f2be6bf384
[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" "7cd865e4ab3531537bd520d06181e63607f973e0c732b9c23c31d2f2be6bf384", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling unicode-normalization v0.1.8
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]    Compiling cmake v0.1.39
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling harfbuzz-sys v0.3.4
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling freetype v0.4.1
[INFO] [stderr]    Compiling servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling font-kit v0.6.0
[INFO] [stderr]    Compiling harfbuzz v0.3.1
[INFO] [stderr]    Compiling skribo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `debug_script_runs`
[INFO] [stdout]    --> src/session.rs:221:4
[INFO] [stdout]     |
[INFO] [stdout] 221 | fn debug_script_runs(text: &str) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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 25.81s
[INFO] running `Command { std: "docker" "inspect" "7cd865e4ab3531537bd520d06181e63607f973e0c732b9c23c31d2f2be6bf384", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cd865e4ab3531537bd520d06181e63607f973e0c732b9c23c31d2f2be6bf384", kill_on_drop: false }`
[INFO] [stdout] 7cd865e4ab3531537bd520d06181e63607f973e0c732b9c23c31d2f2be6bf384
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93fb4bdddfc7da691f59bf0c189d70215b3167a13f1999116954da98363bfabc
[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" "93fb4bdddfc7da691f59bf0c189d70215b3167a13f1999116954da98363bfabc", kill_on_drop: false }`
[INFO] [stderr]    Compiling skribo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `debug_script_runs`
[INFO] [stdout]    --> src/session.rs:221:4
[INFO] [stdout]     |
[INFO] [stdout] 221 | fn debug_script_runs(text: &str) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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: associated function is never used: `paint_layout`
[INFO] [stdout]   --> examples/render.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn paint_layout(&mut self, layout: &Layout, x: i32, y: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `debug_script_runs`
[INFO] [stdout]    --> src/session.rs:221:4
[INFO] [stdout]     |
[INFO] [stdout] 221 | fn debug_script_runs(text: &str) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "93fb4bdddfc7da691f59bf0c189d70215b3167a13f1999116954da98363bfabc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93fb4bdddfc7da691f59bf0c189d70215b3167a13f1999116954da98363bfabc", kill_on_drop: false }`
[INFO] [stdout] 93fb4bdddfc7da691f59bf0c189d70215b3167a13f1999116954da98363bfabc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 15cf8eccdde263480f2101e0a64e99b239b84925be405f64f6a3dca4cbf3b391
[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" "15cf8eccdde263480f2101e0a64e99b239b84925be405f64f6a3dca4cbf3b391", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `debug_script_runs`
[INFO] [stderr]    --> src/session.rs:221:4
[INFO] [stderr]     |
[INFO] [stderr] 221 | fn debug_script_runs(text: &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_script_runs`
[INFO] [stderr]    --> src/session.rs:221:4
[INFO] [stderr]     |
[INFO] [stderr] 221 | fn debug_script_runs(text: &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `paint_layout`
[INFO] [stderr]   --> examples/render.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn paint_layout(&mut self, layout: &Layout, x: i32, y: i32) {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/skribo-bfe817f38a0a4fc8
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests skribo
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "15cf8eccdde263480f2101e0a64e99b239b84925be405f64f6a3dca4cbf3b391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cf8eccdde263480f2101e0a64e99b239b84925be405f64f6a3dca4cbf3b391", kill_on_drop: false }`
[INFO] [stdout] 15cf8eccdde263480f2101e0a64e99b239b84925be405f64f6a3dca4cbf3b391