[INFO] fetching crate stratus 0.1.1...
[INFO] checking stratus-0.1.1 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate stratus 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate stratus 0.1.1 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stratus 0.1.1
[INFO] finished tweaking crates.io crate stratus 0.1.1
[INFO] tweaked toml for crates.io crate stratus 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86e8d5e4fd49797eccd08a337728dad1126ee3a2c7c113f69cd69fc3866ebdab
[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" "86e8d5e4fd49797eccd08a337728dad1126ee3a2c7c113f69cd69fc3866ebdab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86e8d5e4fd49797eccd08a337728dad1126ee3a2c7c113f69cd69fc3866ebdab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e8d5e4fd49797eccd08a337728dad1126ee3a2c7c113f69cd69fc3866ebdab", kill_on_drop: false }`
[INFO] [stdout] 86e8d5e4fd49797eccd08a337728dad1126ee3a2c7c113f69cd69fc3866ebdab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb92aa106e4cb6de11476728143a3297be971111719aa7add6f6f0e96dd10daa
[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" "cb92aa106e4cb6de11476728143a3297be971111719aa7add6f6f0e96dd10daa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling stratus-macros v0.1.1
[INFO] [stderr]     Checking stratus v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `active_session`
[INFO] [stdout]   --> src/instrumentor.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     active_session: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `active_session`
[INFO] [stdout]   --> src/instrumentor.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     active_session: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.48s
[INFO] running `Command { std: "docker" "inspect" "cb92aa106e4cb6de11476728143a3297be971111719aa7add6f6f0e96dd10daa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb92aa106e4cb6de11476728143a3297be971111719aa7add6f6f0e96dd10daa", kill_on_drop: false }`
[INFO] [stdout] cb92aa106e4cb6de11476728143a3297be971111719aa7add6f6f0e96dd10daa