[INFO] fetching crate namedlock 0.7.0...
[INFO] checking namedlock-0.7.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate namedlock 0.7.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate namedlock 0.7.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate namedlock 0.7.0
[INFO] finished tweaking crates.io crate namedlock 0.7.0
[INFO] tweaked toml for crates.io crate namedlock 0.7.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d056b4591020ff9d56228746afdea6f413858ac85a7e43ba7d6970b66126b72
[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" "6d056b4591020ff9d56228746afdea6f413858ac85a7e43ba7d6970b66126b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d056b4591020ff9d56228746afdea6f413858ac85a7e43ba7d6970b66126b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d056b4591020ff9d56228746afdea6f413858ac85a7e43ba7d6970b66126b72", kill_on_drop: false }`
[INFO] [stdout] 6d056b4591020ff9d56228746afdea6f413858ac85a7e43ba7d6970b66126b72
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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] c6e2a4b1973a6eb568a8db4b00a2f11cbf991680190ef6e27d654051eaf8b7c1
[INFO] running `Command { std: "docker" "start" "-a" "c6e2a4b1973a6eb568a8db4b00a2f11cbf991680190ef6e27d654051eaf8b7c1", kill_on_drop: false }`
[INFO] [stderr]     Checking namedlock v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ownedmutexguard.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let guard=try!(unsafe{&*(&self as *const _) as &'a Mutex<T>}.lock().into_result());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:301:15
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut map=try!(self.names.lock().into_result()); // Acquire outer lock
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:308:13
[INFO] [stdout]     |
[INFO] [stdout] 308 |         let guard=try!(target.owned_lock()); // Acquire inner lock, moving our reference
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ownedmutexguard.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let guard=try!(unsafe{&*(&self as *const _) as &'a Mutex<T>}.lock().into_result());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:301:15
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut map=try!(self.names.lock().into_result()); // Acquire outer lock
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:308:13
[INFO] [stdout]     |
[INFO] [stdout] 308 |         let guard=try!(target.owned_lock()); // Acquire inner lock, moving our reference
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "c6e2a4b1973a6eb568a8db4b00a2f11cbf991680190ef6e27d654051eaf8b7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6e2a4b1973a6eb568a8db4b00a2f11cbf991680190ef6e27d654051eaf8b7c1", kill_on_drop: false }`
[INFO] [stdout] c6e2a4b1973a6eb568a8db4b00a2f11cbf991680190ef6e27d654051eaf8b7c1