[INFO] fetching crate mdbook-emoji 0.2.1...
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] crate mdbook-emoji 0.2.1 is already in cache
[INFO] checking mdbook-emoji-0.2.1 against master#1673f1450eeaf4a5452e086db0fe2ae274a0144f for pr-99413
[INFO] extracting crate mdbook-emoji 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mdbook-emoji 0.2.1 on toolchain 1673f1450eeaf4a5452e086db0fe2ae274a0144f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1673f1450eeaf4a5452e086db0fe2ae274a0144f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-emoji 0.2.1
[INFO] finished tweaking crates.io crate mdbook-emoji 0.2.1
[INFO] tweaked toml for crates.io crate mdbook-emoji 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mdbook-emoji 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1673f1450eeaf4a5452e086db0fe2ae274a0144f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v4.0.2
[INFO] [stderr]   Downloaded emojis v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+1673f1450eeaf4a5452e086db0fe2ae274a0144f" "metadata" "--no-deps" "--format-version=1", 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] 24ab027714da0e88bd4de26468a7247131db278dce361b9fa5ee471ed409ecab
[INFO] running `Command { std: "docker" "start" "-a" "24ab027714da0e88bd4de26468a7247131db278dce361b9fa5ee471ed409ecab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24ab027714da0e88bd4de26468a7247131db278dce361b9fa5ee471ed409ecab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24ab027714da0e88bd4de26468a7247131db278dce361b9fa5ee471ed409ecab", kill_on_drop: false }`
[INFO] [stdout] 24ab027714da0e88bd4de26468a7247131db278dce361b9fa5ee471ed409ecab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+1673f1450eeaf4a5452e086db0fe2ae274a0144f" "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] 2809be1a8b3b16f9ca3a35740756eb3f4744b1b9cd581ca9fb94cbcfaf48474b
[INFO] running `Command { std: "docker" "start" "-a" "2809be1a8b3b16f9ca3a35740756eb3f4744b1b9cd581ca9fb94cbcfaf48474b", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking pathdiff v0.2.0
[INFO] [stderr]     Checking shlex v1.0.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking open v1.7.1
[INFO] [stderr]     Checking emojis v0.1.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v4.0.2
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]     Checking handlebars v4.1.2
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking mdbook v0.4.12
[INFO] [stderr]     Checking mdbook-emoji v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] running `Command { std: "docker" "inspect" "2809be1a8b3b16f9ca3a35740756eb3f4744b1b9cd581ca9fb94cbcfaf48474b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2809be1a8b3b16f9ca3a35740756eb3f4744b1b9cd581ca9fb94cbcfaf48474b", kill_on_drop: false }`
[INFO] [stdout] 2809be1a8b3b16f9ca3a35740756eb3f4744b1b9cd581ca9fb94cbcfaf48474b