[INFO] cloning repository https://github.com/Szczurowski/rust-example-hero
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Szczurowski/rust-example-hero" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSzczurowski%2Frust-example-hero", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSzczurowski%2Frust-example-hero'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db5b60b1109b1fbae2531d7568717bb77b4c28fc
[INFO] checking Szczurowski/rust-example-hero against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSzczurowski%2Frust-example-hero" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Szczurowski/rust-example-hero on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Szczurowski/rust-example-hero
[INFO] finished tweaking git repo https://github.com/Szczurowski/rust-example-hero
[INFO] tweaked toml for git repo https://github.com/Szczurowski/rust-example-hero written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Szczurowski/rust-example-hero already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/derive-utils`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded walkdir v2.2.0
[INFO] [stderr]   Downloaded notify v4.0.4
[INFO] [stderr]   Downloaded proc-macro2 v0.4.12
[INFO] [stderr]   Downloaded ryu v0.2.3
[INFO] [stderr]   Downloaded bson v0.12.3
[INFO] [stderr]   Downloaded mongodb v0.3.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2242fbbc4ba7aa18a6788db8a413998b28b8c21ebafb4528685cebbec5d1f6e9
[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" "2242fbbc4ba7aa18a6788db8a413998b28b8c21ebafb4528685cebbec5d1f6e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2242fbbc4ba7aa18a6788db8a413998b28b8c21ebafb4528685cebbec5d1f6e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2242fbbc4ba7aa18a6788db8a413998b28b8c21ebafb4528685cebbec5d1f6e9", kill_on_drop: false }`
[INFO] [stdout] 2242fbbc4ba7aa18a6788db8a413998b28b8c21ebafb4528685cebbec5d1f6e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] 16622773913cd0240a64e479d28d79d8083759d1b2b022ed93ef8659d274500e
[INFO] running `Command { std: "docker" "start" "-a" "16622773913cd0240a64e479d28d79d8083759d1b2b022ed93ef8659d274500e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.12
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]    Compiling byteorder v1.2.4
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]    Compiling ryu v0.2.3
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking yansi v0.4.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking md5 v0.3.7
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]    Compiling pear_codegen v0.1.0 (http://github.com/SergioBenitez/Pear?rev=b475140#b4751403)
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]    Compiling rocket v0.4.0-dev (https://github.com/SergioBenitez/Rocket?rev=fe9fad3#fe9fad33)
[INFO] [stderr]    Compiling rocket_codegen v0.4.0-dev (https://github.com/SergioBenitez/Rocket?rev=fe9fad3#fe9fad33)
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]     Checking walkdir v2.2.0
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]     Checking semver v0.8.0
[INFO] [stderr]    Compiling smallvec v0.6.4
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking filetime v0.1.15
[INFO] [stderr]     Checking isatty v0.1.8
[INFO] [stderr]     Checking inotify v0.3.0
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking chrono v0.4.5
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_def_site'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
[INFO] [stdout]     |
[INFO] [stdout] 346 |             Span::Nightly(proc_macro::Span::def_site())
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54724 <https://github.com/rust-lang/rust/issues/54724> for more information
[INFO] [stdout]     = help: add `#![feature(proc_macro_def_site)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "16622773913cd0240a64e479d28d79d8083759d1b2b022ed93ef8659d274500e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16622773913cd0240a64e479d28d79d8083759d1b2b022ed93ef8659d274500e", kill_on_drop: false }`
[INFO] [stdout] 16622773913cd0240a64e479d28d79d8083759d1b2b022ed93ef8659d274500e