[INFO] fetching crate syn-codegen 0.1.0...
[INFO] checking syn-codegen-0.1.0 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate syn-codegen 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate syn-codegen 0.1.0 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn-codegen 0.1.0
[INFO] finished tweaking crates.io crate syn-codegen 0.1.0
[INFO] tweaked toml for crates.io crate syn-codegen 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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] 5c0a93d14ee657fc3a0d9d0c30ec234dcda50fb18298004907d0e7cc1bb09ceb
[INFO] running `Command { std: "docker" "start" "-a" "5c0a93d14ee657fc3a0d9d0c30ec234dcda50fb18298004907d0e7cc1bb09ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c0a93d14ee657fc3a0d9d0c30ec234dcda50fb18298004907d0e7cc1bb09ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c0a93d14ee657fc3a0d9d0c30ec234dcda50fb18298004907d0e7cc1bb09ceb", kill_on_drop: false }`
[INFO] [stdout] 5c0a93d14ee657fc3a0d9d0c30ec234dcda50fb18298004907d0e7cc1bb09ceb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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] 4d776c702a2bba22cec8323c745d0264a0b6fbc03306ed7b871f0d2c4962a3f8
[INFO] running `Command { std: "docker" "start" "-a" "4d776c702a2bba22cec8323c745d0264a0b6fbc03306ed7b871f0d2c4962a3f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking syn-codegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.45s
[INFO] running `Command { std: "docker" "inspect" "4d776c702a2bba22cec8323c745d0264a0b6fbc03306ed7b871f0d2c4962a3f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d776c702a2bba22cec8323c745d0264a0b6fbc03306ed7b871f0d2c4962a3f8", kill_on_drop: false }`
[INFO] [stdout] 4d776c702a2bba22cec8323c745d0264a0b6fbc03306ed7b871f0d2c4962a3f8