[INFO] cloning repository https://github.com/bokuweb/wu-diff-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bokuweb/wu-diff-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbokuweb%2Fwu-diff-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbokuweb%2Fwu-diff-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 442be7095f7ef710c6ef74c004a54940917d7143
[INFO] checking bokuweb/wu-diff-rs against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbokuweb%2Fwu-diff-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bokuweb/wu-diff-rs on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bokuweb/wu-diff-rs
[INFO] finished tweaking git repo https://github.com/bokuweb/wu-diff-rs
[INFO] tweaked toml for git repo https://github.com/bokuweb/wu-diff-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/bokuweb/wu-diff-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools-num v0.1.1
[INFO] [stderr]   Downloaded criterion v0.2.3
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded criterion-plot v0.2.3
[INFO] [stderr]   Downloaded simplelog v0.5.1
[INFO] [stderr]   Downloaded clippy_lints v0.0.209
[INFO] [stderr]   Downloaded clippy v0.0.209
[INFO] [stderr]   Downloaded pest_derive v1.0.7
[INFO] [stderr]   Downloaded criterion-stats v0.2.3
[INFO] [stderr]   Downloaded pest v1.0.6
[INFO] [stderr]   Downloaded handlebars v0.31.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcbe1993d06e4fc8fe436d897089585b0f8c2acafbb4ccf68b679929e74a1fc8
[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" "bcbe1993d06e4fc8fe436d897089585b0f8c2acafbb4ccf68b679929e74a1fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcbe1993d06e4fc8fe436d897089585b0f8c2acafbb4ccf68b679929e74a1fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcbe1993d06e4fc8fe436d897089585b0f8c2acafbb4ccf68b679929e74a1fc8", kill_on_drop: false }`
[INFO] [stdout] bcbe1993d06e4fc8fe436d897089585b0f8c2acafbb4ccf68b679929e74a1fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] a4e614689fff2f6dbe181937ef893ce83b8d6107cba24c8d0b5a256f1299b339
[INFO] running `Command { std: "docker" "start" "-a" "a4e614689fff2f6dbe181937ef893ce83b8d6107cba24c8d0b5a256f1299b339", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking serde v1.0.42
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking wu-diff v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking atty v0.2.9
[INFO] [stderr]     Checking regex-syntax v0.5.5
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking itertools-num v0.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking backtrace-sys v0.1.16
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking criterion-stats v0.2.3
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking backtrace v0.3.6
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking criterion-plot v0.2.3
[INFO] [stderr]     Checking simplelog v0.5.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]    Compiling serde_derive v1.0.42
[INFO] [stderr]     Checking serde_json v1.0.16
[INFO] [stderr]     Checking handlebars v0.31.0
[INFO] [stderr]     Checking criterion v0.2.3
[INFO] [stdout] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> tests/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` 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 1m 04s
[INFO] running `Command { std: "docker" "inspect" "a4e614689fff2f6dbe181937ef893ce83b8d6107cba24c8d0b5a256f1299b339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4e614689fff2f6dbe181937ef893ce83b8d6107cba24c8d0b5a256f1299b339", kill_on_drop: false }`
[INFO] [stdout] a4e614689fff2f6dbe181937ef893ce83b8d6107cba24c8d0b5a256f1299b339