[INFO] fetching crate concache 0.2.1...
[INFO] checking concache-0.2.1 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate concache 0.2.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate concache 0.2.1 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concache 0.2.1
[INFO] finished tweaking crates.io crate concache 0.2.1
[INFO] tweaked toml for crates.io crate concache 0.2.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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] 8ec3275df81cb50f6f0c521c43904a3c586458f2259f0ba662698c903b4cc555
[INFO] running `Command { std: "docker" "start" "-a" "8ec3275df81cb50f6f0c521c43904a3c586458f2259f0ba662698c903b4cc555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ec3275df81cb50f6f0c521c43904a3c586458f2259f0ba662698c903b4cc555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ec3275df81cb50f6f0c521c43904a3c586458f2259f0ba662698c903b4cc555", kill_on_drop: false }`
[INFO] [stdout] 8ec3275df81cb50f6f0c521c43904a3c586458f2259f0ba662698c903b4cc555
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02894d534209a7dad745237f6649ee6b66c311019c4fd714f7c1a635cf167c46
[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" "02894d534209a7dad745237f6649ee6b66c311019c4fd714f7c1a635cf167c46", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]     Checking concache v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/manual/linked_list.rs:86:18
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 .compare_and_swap(right_node, new_node_ptr, OSC)
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/manual/linked_list.rs:131:49
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 && unsafe { &*right_node }.next.compare_and_swap(
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/manual/linked_list.rs:147:14
[INFO] [stdout]     |
[INFO] [stdout] 147 |             .compare_and_swap(right_node, right_node_next, OSC)
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/manual/linked_list.rs:220:18
[INFO] [stdout]     |
[INFO] [stdout] 220 |                 .compare_and_swap(left_node_next, right_node, OSC)
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     let mut raw = k.as_raw();
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     let mut cur = unsafe { &*raw };
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         let mut ins = Owned::new(kv.1);
[INFO] [stdout]    |                             ----^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:63:29
[INFO] [stdout]    |
[INFO] [stdout] 63 |                         let mut ins = Owned::new(Node::new(kv.0, kv.1));
[INFO] [stdout]    |                             ----^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |                     let mut ins = Owned::new(Node::new(kv.0, kv.1));
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:86:25
[INFO] [stdout]    |
[INFO] [stdout] 86 |                     let mut raw = k.as_raw();
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:87:25
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     let mut cur = unsafe { &*raw };
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:108:25
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     let mut raw = k.as_raw();
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let mut cur = unsafe { &*raw };
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 |                         let mut new_node = match node.load(Ordering::SeqCst, &guard) {
[INFO] [stdout]     |                             ----^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:124:29
[INFO] [stdout]     |
[INFO] [stdout] 124 |                         let mut new_node_raw_cur = unsafe { &*new_node.as_raw() };
[INFO] [stdout]     |                             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let mut raw = k.as_raw();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |             let mut cur = unsafe { &*raw };
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/manual/linked_list.rs:86:18
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 .compare_and_swap(right_node, new_node_ptr, OSC)
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/manual/linked_list.rs:131:49
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 && unsafe { &*right_node }.next.compare_and_swap(
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/manual/linked_list.rs:147:14
[INFO] [stdout]     |
[INFO] [stdout] 147 |             .compare_and_swap(right_node, right_node_next, OSC)
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/manual/linked_list.rs:220:18
[INFO] [stdout]     |
[INFO] [stdout] 220 |                 .compare_and_swap(left_node_next, right_node, OSC)
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     let mut raw = k.as_raw();
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     let mut cur = unsafe { &*raw };
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |                         let mut ins = Owned::new(kv.1);
[INFO] [stdout]    |                             ----^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:63:29
[INFO] [stdout]    |
[INFO] [stdout] 63 |                         let mut ins = Owned::new(Node::new(kv.0, kv.1));
[INFO] [stdout]    |                             ----^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |                     let mut ins = Owned::new(Node::new(kv.0, kv.1));
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:86:25
[INFO] [stdout]    |
[INFO] [stdout] 86 |                     let mut raw = k.as_raw();
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/crossbeam/linked_list.rs:87:25
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     let mut cur = unsafe { &*raw };
[INFO] [stdout]    |                         ----^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:108:25
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     let mut raw = k.as_raw();
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let mut cur = unsafe { &*raw };
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 |                         let mut new_node = match node.load(Ordering::SeqCst, &guard) {
[INFO] [stdout]     |                             ----^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:124:29
[INFO] [stdout]     |
[INFO] [stdout] 124 |                         let mut new_node_raw_cur = unsafe { &*new_node.as_raw() };
[INFO] [stdout]     |                             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let mut raw = k.as_raw();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/crossbeam/linked_list.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |             let mut cur = unsafe { &*raw };
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.70s
[INFO] running `Command { std: "docker" "inspect" "02894d534209a7dad745237f6649ee6b66c311019c4fd714f7c1a635cf167c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02894d534209a7dad745237f6649ee6b66c311019c4fd714f7c1a635cf167c46", kill_on_drop: false }`
[INFO] [stdout] 02894d534209a7dad745237f6649ee6b66c311019c4fd714f7c1a635cf167c46