[INFO] fetching crate mice 0.11.1...
[INFO] checking mice-0.11.1 against master#6d05c430d2f0573bf98320bb1d2457a72ea1e67f for pr-116607
[INFO] extracting crate mice 0.11.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mice 0.11.1 on toolchain 6d05c430d2f0573bf98320bb1d2457a72ea1e67f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mice 0.11.1
[INFO] finished tweaking crates.io crate mice 0.11.1
[INFO] tweaked toml for crates.io crate mice 0.11.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mbot_proc_macro_helpers v0.0.2
[INFO] [stderr]   Downloaded quickscope v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc19b2e13fafa4e95bc74267bfe949f0cd1d5607a3fa37f8b029b17c68fa01a1
[INFO] running `Command { std: "docker" "start" "-a" "bc19b2e13fafa4e95bc74267bfe949f0cd1d5607a3fa37f8b029b17c68fa01a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc19b2e13fafa4e95bc74267bfe949f0cd1d5607a3fa37f8b029b17c68fa01a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc19b2e13fafa4e95bc74267bfe949f0cd1d5607a3fa37f8b029b17c68fa01a1", kill_on_drop: false }`
[INFO] [stdout] bc19b2e13fafa4e95bc74267bfe949f0cd1d5607a3fa37f8b029b17c68fa01a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92edcb0d3904c7ea9dec1c92aa305343effabca5fc063b01f3e306cbc8463ec6
[INFO] running `Command { std: "docker" "start" "-a" "92edcb0d3904c7ea9dec1c92aa305343effabca5fc063b01f3e306cbc8463ec6", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking core_extensions v1.5.3
[INFO] [stderr]     Checking id-arena v2.2.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking quickscope v0.1.6
[INFO] [stderr]    Compiling mbot_proc_macro_helpers v0.0.2
[INFO] [stderr]     Checking mice v0.11.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `MirEdge`, `MirNode`
[INFO] [stdout]  --> src/mir/check.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::{MirEdge, MirGraph, MirNode};
[INFO] [stdout]   |             ^^^^^^^            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFrom`
[INFO] [stdout]   --> src/mir/stack.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 | use ::core::convert::{TryFrom, TryInto};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/mir/check.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn only_function_deps_for_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/mir/check.rs:25:36
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn statically_resolvable_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/mir/check.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn arg_types(graph: &MirGraph) -> bool {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: variant `PartialApply` is never constructed
[INFO] [stdout]    --> src/mir.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 211 | enum MirNode {
[INFO] [stdout]     |      ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 240 |     PartialApply,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MirNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `only_function_deps_for_functions` is never used
[INFO] [stdout]   --> src/mir/check.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn only_function_deps_for_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statically_resolvable_functions` is never used
[INFO] [stdout]   --> src/mir/check.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn statically_resolvable_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arg_types` is never used
[INFO] [stdout]   --> src/mir/check.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn arg_types(graph: &MirGraph) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all` is never used
[INFO] [stdout]   --> src/mir/check.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(super) fn all(graph: &MirGraph) -> Result<(), Vec<&'static str>> {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node_index` is never read
[INFO] [stdout]    --> src/mir/stack.rs:621:17
[INFO] [stdout]     |
[INFO] [stdout] 618 |             struct FmtArg<'a> {
[INFO] [stdout]     |                    ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 621 |                 node_index: <MirGraph as GraphBase>::NodeId,
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `val` is never used
[INFO] [stdout]    --> src/tree.rs:265:19
[INFO] [stdout]     |
[INFO] [stdout] 264 | impl TreeIndex {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 265 |     pub(crate) fn val(&self) -> u8 {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StackProgram` is never constructed
[INFO] [stdout]   --> benches/tree.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |         pub struct StackProgram(Vec<Instruction>);
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `count`, `sides`, and `keep_count` are never read
[INFO] [stdout]   --> benches/tree.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             DiceRollKeepHigh {
[INFO] [stdout]    |             ---------------- fields in this variant
[INFO] [stdout] 54 |                 count: i64,
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout] 55 |                 sides: i64,
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout] 56 |                 keep_count: i64,
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MirEdge`, `MirNode`
[INFO] [stdout]  --> src/mir/check.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::{MirEdge, MirGraph, MirNode};
[INFO] [stdout]   |             ^^^^^^^            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFrom`
[INFO] [stdout]   --> src/mir/stack.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 | use ::core::convert::{TryFrom, TryInto};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/mir/check.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn only_function_deps_for_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/mir/check.rs:25:36
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn statically_resolvable_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]   --> src/mir/check.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn arg_types(graph: &MirGraph) -> bool {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `PartialApply` is never constructed
[INFO] [stdout]    --> src/mir.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 211 | enum MirNode {
[INFO] [stdout]     |      ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 240 |     PartialApply,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MirNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `only_function_deps_for_functions` is never used
[INFO] [stdout]   --> src/mir/check.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn only_function_deps_for_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statically_resolvable_functions` is never used
[INFO] [stdout]   --> src/mir/check.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn statically_resolvable_functions(graph: &MirGraph) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arg_types` is never used
[INFO] [stdout]   --> src/mir/check.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn arg_types(graph: &MirGraph) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all` is never used
[INFO] [stdout]   --> src/mir/check.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(super) fn all(graph: &MirGraph) -> Result<(), Vec<&'static str>> {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node_index` is never read
[INFO] [stdout]    --> src/mir/stack.rs:621:17
[INFO] [stdout]     |
[INFO] [stdout] 618 |             struct FmtArg<'a> {
[INFO] [stdout]     |                    ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 621 |                 node_index: <MirGraph as GraphBase>::NodeId,
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `val` is never used
[INFO] [stdout]    --> src/tree.rs:265:19
[INFO] [stdout]     |
[INFO] [stdout] 264 | impl TreeIndex {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 265 |     pub(crate) fn val(&self) -> u8 {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "92edcb0d3904c7ea9dec1c92aa305343effabca5fc063b01f3e306cbc8463ec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92edcb0d3904c7ea9dec1c92aa305343effabca5fc063b01f3e306cbc8463ec6", kill_on_drop: false }`
[INFO] [stdout] 92edcb0d3904c7ea9dec1c92aa305343effabca5fc063b01f3e306cbc8463ec6