[INFO] fetching crate mp 0.1.0...
[INFO] checking mp-0.1.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate mp 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mp 0.1.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mp 0.1.0
[INFO] finished tweaking crates.io crate mp 0.1.0
[INFO] tweaked toml for crates.io crate mp 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a1ee46c0e36e595c3c6c1ebbdd5ba914237095ee8a5cbd103fd2121659d0cea
[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" "3a1ee46c0e36e595c3c6c1ebbdd5ba914237095ee8a5cbd103fd2121659d0cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a1ee46c0e36e595c3c6c1ebbdd5ba914237095ee8a5cbd103fd2121659d0cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a1ee46c0e36e595c3c6c1ebbdd5ba914237095ee8a5cbd103fd2121659d0cea", kill_on_drop: false }`
[INFO] [stdout] 3a1ee46c0e36e595c3c6c1ebbdd5ba914237095ee8a5cbd103fd2121659d0cea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 364f546521048420e90e83b67b3a0662eec6deea496ac8a1aaecfcb02409d6ca
[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" "364f546521048420e90e83b67b3a0662eec6deea496ac8a1aaecfcb02409d6ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking pretty_grammar v0.1.3
[INFO] [stderr]     Checking mp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::Data`
[INFO] [stdout]   --> src/core/case.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::Data;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Data`
[INFO] [stdout]   --> src/core/class.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::Data;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::btree_map::BTreeMap`
[INFO] [stdout]   --> src/core/collections/tree.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::collections::btree_map::BTreeMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::tree::Tree`
[INFO] [stdout]   --> src/core/collections/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use self::tree::Tree;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Data`
[INFO] [stdout]   --> src/core/method.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::Data;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/core/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::collections::*`
[INFO] [stdout]   --> src/core/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use self::collections::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Data`
[INFO] [stdout]   --> src/core/case.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::Data;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Data`
[INFO] [stdout]   --> src/core/class.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::Data;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::btree_map::BTreeMap`
[INFO] [stdout]   --> src/core/collections/tree.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::collections::btree_map::BTreeMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::tree::Tree`
[INFO] [stdout]   --> src/core/collections/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use self::tree::Tree;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Data`
[INFO] [stdout]   --> src/core/method.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::Data;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/core/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::collections::*`
[INFO] [stdout]   --> src/core/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use self::collections::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/console/mod.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |             Some(path) => {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/console/mod.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let path = args.next_str(command)?;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `raw`
[INFO] [stdout]   --> src/core/collections/tree.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn from_raw(raw: Binary) -> Self {unimplemented!()}
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `raw`
[INFO] [stdout]   --> src/core/collections/tree.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn from_raw(raw: Binary) -> Self {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/console/mod.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |             Some(path) => {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/console/mod.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let path = args.next_str(command)?;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `raw`
[INFO] [stdout]   --> src/core/collections/tree.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn from_raw(raw: Binary) -> Self {unimplemented!()}
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `raw`
[INFO] [stdout]   --> src/core/collections/tree.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn from_raw(raw: Binary) -> Self {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_raw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `core`
[INFO] [stdout]   --> src/console/mod.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     core: MpCore,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]   --> src/core/collections/tree.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     key: T,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `now`
[INFO] [stdout]   --> src/core/collections/tree.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     now: ID,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/core/collections/tree.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     parent: ID,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/core/collections/tree.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     next: ID,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `ID`
[INFO] [stdout]   --> src/core/mod.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | type ID = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `string_table`
[INFO] [stdout]   --> src/core/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     string_table: StringTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `case_table`
[INFO] [stdout]   --> src/core/mod.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     case_table: CaseTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `class_table`
[INFO] [stdout]   --> src/core/mod.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     class_table: ClassTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `method_table`
[INFO] [stdout]   --> src/core/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     method_table: MethodTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `core`
[INFO] [stdout]   --> src/console/mod.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     core: MpCore,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]   --> src/core/collections/tree.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     key: T,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `now`
[INFO] [stdout]   --> src/core/collections/tree.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     now: ID,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/core/collections/tree.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     parent: ID,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/core/collections/tree.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     next: ID,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `ID`
[INFO] [stdout]   --> src/core/mod.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | type ID = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `string_table`
[INFO] [stdout]   --> src/core/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     string_table: StringTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `case_table`
[INFO] [stdout]   --> src/core/mod.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     case_table: CaseTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `class_table`
[INFO] [stdout]   --> src/core/mod.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     class_table: ClassTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `method_table`
[INFO] [stdout]   --> src/core/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     method_table: MethodTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.64s
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "364f546521048420e90e83b67b3a0662eec6deea496ac8a1aaecfcb02409d6ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364f546521048420e90e83b67b3a0662eec6deea496ac8a1aaecfcb02409d6ca", kill_on_drop: false }`
[INFO] [stdout] 364f546521048420e90e83b67b3a0662eec6deea496ac8a1aaecfcb02409d6ca