[INFO] fetching crate jfs 0.6.2...
[INFO] checking jfs-0.6.2 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate jfs 0.6.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate jfs 0.6.2 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jfs 0.6.2
[INFO] finished tweaking crates.io crate jfs 0.6.2
[INFO] tweaked toml for crates.io crate jfs 0.6.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] 9a0976a9410264919792e43f8a2b85d61168b0596b0403a3314f25050c0fac40
[INFO] running `Command { std: "docker" "start" "-a" "9a0976a9410264919792e43f8a2b85d61168b0596b0403a3314f25050c0fac40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a0976a9410264919792e43f8a2b85d61168b0596b0403a3314f25050c0fac40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a0976a9410264919792e43f8a2b85d61168b0596b0403a3314f25050c0fac40", kill_on_drop: false }`
[INFO] [stdout] 9a0976a9410264919792e43f8a2b85d61168b0596b0403a3314f25050c0fac40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1239976f3625412495476d51fe02ad5985c1a18c81fe980aef7a885751002a16
[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" "1239976f3625412495476d51fe02ad5985c1a18c81fe980aef7a885751002a16", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking jfs v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stdout] warning: unnecessary trailing semicolons
[INFO] [stdout]    --> src/file_store.rs:460:14
[INFO] [stdout]     |
[INFO] [stdout] 460 |               };
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 461 | |             #[cfg(feature = "rustc-serialize")]
[INFO] [stdout] 462 | |             #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stdout] 463 | |             struct X {
[INFO] [stdout] 464 | |                 x: u32,
[INFO] [stdout] 465 | |                 y: u32,
[INFO] [stdout] 466 | |             };
[INFO] [stdout]     | |______________^ help: remove these semicolons
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolons
[INFO] [stdout]    --> src/memory_store.rs:241:10
[INFO] [stdout]     |
[INFO] [stdout] 241 |           };
[INFO] [stdout]     |  __________^
[INFO] [stdout] 242 | |         #[cfg(feature = "rustc-serialize")]
[INFO] [stdout] 243 | |         #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stdout] 244 | |         struct X {
[INFO] [stdout] 245 | |             x: u32,
[INFO] [stdout] 246 | |             y: u32,
[INFO] [stdout] 247 | |         };
[INFO] [stdout]     | |__________^ help: remove these semicolons
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.35s
[INFO] running `Command { std: "docker" "inspect" "1239976f3625412495476d51fe02ad5985c1a18c81fe980aef7a885751002a16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1239976f3625412495476d51fe02ad5985c1a18c81fe980aef7a885751002a16", kill_on_drop: false }`
[INFO] [stdout] 1239976f3625412495476d51fe02ad5985c1a18c81fe980aef7a885751002a16