[INFO] fetching crate serde_tokenstream 0.1.2...
[INFO] checking serde_tokenstream-0.1.2 against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] extracting crate serde_tokenstream 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate serde_tokenstream 0.1.2 on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_tokenstream 0.1.2
[INFO] finished tweaking crates.io crate serde_tokenstream 0.1.2
[INFO] tweaked toml for crates.io crate serde_tokenstream 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "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] d1e770ccb9e2ac9646073ec206e415cb389f8e84cdb0a5a4c49241f5a46ce4db
[INFO] running `Command { std: "docker" "start" "-a" "d1e770ccb9e2ac9646073ec206e415cb389f8e84cdb0a5a4c49241f5a46ce4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1e770ccb9e2ac9646073ec206e415cb389f8e84cdb0a5a4c49241f5a46ce4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1e770ccb9e2ac9646073ec206e415cb389f8e84cdb0a5a4c49241f5a46ce4db", kill_on_drop: false }`
[INFO] [stdout] d1e770ccb9e2ac9646073ec206e415cb389f8e84cdb0a5a4c49241f5a46ce4db
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79af85f30d0834c53dd5d94c8387c2dce9a2099754c558d5dcfd2a50ee62a69a
[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" "79af85f30d0834c53dd5d94c8387c2dce9a2099754c558d5dcfd2a50ee62a69a", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling trybuild v1.0.35
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking serde_tokenstream v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.45s
[INFO] running `Command { std: "docker" "inspect" "79af85f30d0834c53dd5d94c8387c2dce9a2099754c558d5dcfd2a50ee62a69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79af85f30d0834c53dd5d94c8387c2dce9a2099754c558d5dcfd2a50ee62a69a", kill_on_drop: false }`
[INFO] [stdout] 79af85f30d0834c53dd5d94c8387c2dce9a2099754c558d5dcfd2a50ee62a69a