[INFO] fetching crate fasten 0.1.13...
[INFO] checking fasten-0.1.13 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate fasten 0.1.13 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fasten 0.1.13 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fasten 0.1.13
[INFO] finished tweaking crates.io crate fasten 0.1.13
[INFO] tweaked toml for crates.io crate fasten 0.1.13 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded owning_ref v0.2.4
[INFO] [stderr]   Downloaded parking_lot v0.3.8
[INFO] [stderr]   Downloaded multiqueue v0.3.2
[INFO] [stderr]   Downloaded smallvec v0.3.4
[INFO] [stderr]   Downloaded statistical v0.1.1
[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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fa1cc7b1c47140158923cbc7b266ad3bfa3b3390bf83a6ab9e193ee9e374e7b
[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" "0fa1cc7b1c47140158923cbc7b266ad3bfa3b3390bf83a6ab9e193ee9e374e7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fa1cc7b1c47140158923cbc7b266ad3bfa3b3390bf83a6ab9e193ee9e374e7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa1cc7b1c47140158923cbc7b266ad3bfa3b3390bf83a6ab9e193ee9e374e7b", kill_on_drop: false }`
[INFO] [stdout] 0fa1cc7b1c47140158923cbc7b266ad3bfa3b3390bf83a6ab9e193ee9e374e7b
[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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3484522f8d7a30092e46159b458545f9b2056be0cdbf8a524f57844a0eeb371
[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" "a3484522f8d7a30092e46159b458545f9b2056be0cdbf8a524f57844a0eeb371", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking parking_lot v0.3.8
[INFO] [stderr]     Checking multiqueue v0.3.2
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking statistical v0.1.1
[INFO] [stderr]     Checking fasten v0.1.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/io/seq.rs:49:36
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn sanitize_id(id: &String) -> (String);
[INFO] [stdout]    |                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/io/seq.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn sanitize_id(id: &String) -> (String) {
[INFO] [stdout]     |                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/io/seq.rs:49:36
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn sanitize_id(id: &String) -> (String);
[INFO] [stdout]    |                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/io/seq.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn sanitize_id(id: &String) -> (String) {
[INFO] [stdout]     |                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.09s
[INFO] running `Command { std: "docker" "inspect" "a3484522f8d7a30092e46159b458545f9b2056be0cdbf8a524f57844a0eeb371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3484522f8d7a30092e46159b458545f9b2056be0cdbf8a524f57844a0eeb371", kill_on_drop: false }`
[INFO] [stdout] a3484522f8d7a30092e46159b458545f9b2056be0cdbf8a524f57844a0eeb371