[INFO] fetching crate kaon 0.1.4...
[INFO] testing kaon-0.1.4 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate kaon 0.1.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate kaon 0.1.4
[INFO] finished tweaking crates.io crate kaon 0.1.4
[INFO] tweaked toml for crates.io crate kaon 0.1.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kaon 0.1.4 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 69 packages to latest compatible versions
[INFO] [stderr]       Adding ahash v0.7.8 (available: v0.8.12)
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2c8c1a620b2c5afd843babc93a10a8e664beeff15e92b04641ca91bb3a896a0
[INFO] running `Command { std: "docker" "start" "-a" "f2c8c1a620b2c5afd843babc93a10a8e664beeff15e92b04641ca91bb3a896a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2c8c1a620b2c5afd843babc93a10a8e664beeff15e92b04641ca91bb3a896a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2c8c1a620b2c5afd843babc93a10a8e664beeff15e92b04641ca91bb3a896a0", kill_on_drop: false }`
[INFO] [stdout] f2c8c1a620b2c5afd843babc93a10a8e664beeff15e92b04641ca91bb3a896a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc8d0ed1265c3200563d688139d112b0519e803f8d6ac51ac93d5a094542a68e
[INFO] running `Command { std: "docker" "start" "-a" "dc8d0ed1265c3200563d688139d112b0519e803f8d6ac51ac93d5a094542a68e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling kaon v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/compiler/ast.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct StmtBlock(SmallVec<[Stmt; 4]>, Span);
[INFO] [stdout]    |            --------- ^^^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:311:56
[INFO] [stdout]     |
[INFO] [stdout] 311 |                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stdout]     |                                                        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Value` does not implement `Borrow`, so calling `borrow` on `&Value` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 311 -                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stdout] 311 +                     self.stack.push(data.value.as_ref().clone());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Value`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:19:1
[INFO] [stdout]     |
[INFO] [stdout]  19 + #[derive(Clone)]
[INFO] [stdout]  20 | pub enum Value {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:585:52
[INFO] [stdout]     |
[INFO] [stdout] 585 |             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stdout]     |                                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Value` does not implement `Borrow`, so calling `borrow` on `&Value` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 585 -             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stdout] 585 +             upvalue.closed = upvalue.value.as_ref().clone();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Value`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:19:1
[INFO] [stdout]     |
[INFO] [stdout]  19 + #[derive(Clone)]
[INFO] [stdout]  20 | pub enum Value {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:588:74
[INFO] [stdout]     |
[INFO] [stdout] 588 |             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stdout]     |                                                                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Upvalue` does not implement `Borrow`, so calling `borrow` on `&Upvalue` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 588 -             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stdout] 588 +             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().clone());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Upvalue`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:832:1
[INFO] [stdout]     |
[INFO] [stdout] 832 + #[derive(Clone)]
[INFO] [stdout] 833 | pub struct Upvalue {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.26s
[INFO] running `Command { std: "docker" "inspect" "dc8d0ed1265c3200563d688139d112b0519e803f8d6ac51ac93d5a094542a68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc8d0ed1265c3200563d688139d112b0519e803f8d6ac51ac93d5a094542a68e", kill_on_drop: false }`
[INFO] [stdout] dc8d0ed1265c3200563d688139d112b0519e803f8d6ac51ac93d5a094542a68e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2bf7ade7cc34e887403dc5a38db851f7f3607699ab3664fe28faf4682d4c7cb
[INFO] running `Command { std: "docker" "start" "-a" "b2bf7ade7cc34e887403dc5a38db851f7f3607699ab3664fe28faf4682d4c7cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling half v1.8.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/compiler/ast.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct StmtBlock(SmallVec<[Stmt; 4]>, Span);
[INFO] [stdout]    |            --------- ^^^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:311:56
[INFO] [stdout]     |
[INFO] [stdout] 311 |                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stdout]     |                                                        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Value` does not implement `Borrow`, so calling `borrow` on `&Value` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 311 -                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stdout] 311 +                     self.stack.push(data.value.as_ref().clone());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Value`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:19:1
[INFO] [stdout]     |
[INFO] [stdout]  19 + #[derive(Clone)]
[INFO] [stdout]  20 | pub enum Value {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:585:52
[INFO] [stdout]     |
[INFO] [stdout] 585 |             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stdout]     |                                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Value` does not implement `Borrow`, so calling `borrow` on `&Value` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 585 -             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stdout] 585 +             upvalue.closed = upvalue.value.as_ref().clone();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Value`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:19:1
[INFO] [stdout]     |
[INFO] [stdout]  19 + #[derive(Clone)]
[INFO] [stdout]  20 | pub enum Value {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:588:74
[INFO] [stdout]     |
[INFO] [stdout] 588 |             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stdout]     |                                                                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Upvalue` does not implement `Borrow`, so calling `borrow` on `&Upvalue` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 588 -             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stdout] 588 +             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().clone());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Upvalue`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:832:1
[INFO] [stdout]     |
[INFO] [stdout] 832 + #[derive(Clone)]
[INFO] [stdout] 833 | pub struct Upvalue {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling kaon v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MockError` is never constructed
[INFO] [stdout]  --> tests/test_error.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct MockError;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/compiler/ast.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct StmtBlock(SmallVec<[Stmt; 4]>, Span);
[INFO] [stdout]    |            --------- ^^^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:311:56
[INFO] [stdout]     |
[INFO] [stdout] 311 |                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stdout]     |                                                        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `value::Value` does not implement `Borrow`, so calling `borrow` on `&value::Value` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 311 -                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stdout] 311 +                     self.stack.push(data.value.as_ref().clone());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `value::Value`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:19:1
[INFO] [stdout]     |
[INFO] [stdout]  19 + #[derive(Clone)]
[INFO] [stdout]  20 | pub enum Value {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:585:52
[INFO] [stdout]     |
[INFO] [stdout] 585 |             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stdout]     |                                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `value::Value` does not implement `Borrow`, so calling `borrow` on `&value::Value` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 585 -             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stdout] 585 +             upvalue.closed = upvalue.value.as_ref().clone();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `value::Value`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:19:1
[INFO] [stdout]     |
[INFO] [stdout]  19 + #[derive(Clone)]
[INFO] [stdout]  20 | pub enum Value {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/runtime/vm.rs:588:74
[INFO] [stdout]     |
[INFO] [stdout] 588 |             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stdout]     |                                                                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Upvalue` does not implement `Borrow`, so calling `borrow` on `&Upvalue` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 588 -             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stdout] 588 +             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().clone());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Upvalue`, implement `Clone` for it
[INFO] [stdout]    --> src/common/value.rs:832:1
[INFO] [stdout]     |
[INFO] [stdout] 832 + #[derive(Clone)]
[INFO] [stdout] 833 | pub struct Upvalue {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 52.02s
[INFO] running `Command { std: "docker" "inspect" "b2bf7ade7cc34e887403dc5a38db851f7f3607699ab3664fe28faf4682d4c7cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2bf7ade7cc34e887403dc5a38db851f7f3607699ab3664fe28faf4682d4c7cb", kill_on_drop: false }`
[INFO] [stdout] b2bf7ade7cc34e887403dc5a38db851f7f3607699ab3664fe28faf4682d4c7cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] db5305a922223e47770dd3c15a44cf1ce7ac6fba0fdea118880a79418ed6028b
[INFO] running `Command { std: "docker" "start" "-a" "db5305a922223e47770dd3c15a44cf1ce7ac6fba0fdea118880a79418ed6028b", kill_on_drop: false }`
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]   --> src/compiler/ast.rs:57:22
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub struct StmtBlock(SmallVec<[Stmt; 4]>, Span);
[INFO] [stderr]    |            --------- ^^^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            fields in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing these fields
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/runtime/vm.rs:311:56
[INFO] [stderr]     |
[INFO] [stderr] 311 |                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stderr]     |                                                        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `Value` does not implement `Borrow`, so calling `borrow` on `&Value` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 311 -                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stderr] 311 +                     self.stack.push(data.value.as_ref().clone());
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `Value`, implement `Clone` for it
[INFO] [stderr]    --> src/common/value.rs:19:1
[INFO] [stderr]     |
[INFO] [stderr]  19 + #[derive(Clone)]
[INFO] [stderr]  20 | pub enum Value {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/runtime/vm.rs:585:52
[INFO] [stderr]     |
[INFO] [stderr] 585 |             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stderr]     |                                                    ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `Value` does not implement `Borrow`, so calling `borrow` on `&Value` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 585 -             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stderr] 585 +             upvalue.closed = upvalue.value.as_ref().clone();
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `Value`, implement `Clone` for it
[INFO] [stderr]    --> src/common/value.rs:19:1
[INFO] [stderr]     |
[INFO] [stderr]  19 + #[derive(Clone)]
[INFO] [stderr]  20 | pub enum Value {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/runtime/vm.rs:588:74
[INFO] [stderr]     |
[INFO] [stderr] 588 |             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stderr]     |                                                                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `Upvalue` does not implement `Borrow`, so calling `borrow` on `&Upvalue` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 588 -             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().borrow().clone());
[INFO] [stderr] 588 +             self.open_upvalues = upvalue.next.as_ref().map(|v| v.as_ref().clone());
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `Upvalue`, implement `Clone` for it
[INFO] [stderr]    --> src/common/value.rs:832:1
[INFO] [stderr]     |
[INFO] [stderr] 832 + #[derive(Clone)]
[INFO] [stderr] 833 | pub struct Upvalue {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `kaon` (lib) generated 4 warnings (run `cargo fix --lib -p kaon` to apply 3 suggestions)
[INFO] [stderr] warning: struct `MockError` is never constructed
[INFO] [stderr]  --> tests/test_error.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct MockError;
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/runtime/vm.rs:311:56
[INFO] [stderr]     |
[INFO] [stderr] 311 |                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stderr]     |                                                        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `value::Value` does not implement `Borrow`, so calling `borrow` on `&value::Value` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 311 -                     self.stack.push(data.value.as_ref().borrow().clone());
[INFO] [stderr] 311 +                     self.stack.push(data.value.as_ref().clone());
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `value::Value`, implement `Clone` for it
[INFO] [stderr]    --> src/common/value.rs:19:1
[INFO] [stderr]     |
[INFO] [stderr]  19 + #[derive(Clone)]
[INFO] [stderr]  20 | pub enum Value {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/runtime/vm.rs:585:52
[INFO] [stderr]     |
[INFO] [stderr] 585 |             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stderr]     |                                                    ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `value::Value` does not implement `Borrow`, so calling `borrow` on `&value::Value` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 585 -             upvalue.closed = upvalue.value.as_ref().borrow().clone();
[INFO] [stderr] 585 +             upvalue.closed = upvalue.value.as_ref().clone();
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `value::Value`, implement `Clone` for it
[INFO] [stderr]    --> src/common/value.rs:19:1
[INFO] [stderr]     |
[INFO] [stderr]  19 + #[derive(Clone)]
[INFO] [stderr]  20 | pub enum Value {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `kaon` (test "test_error") generated 1 warning
[INFO] [stderr] warning: `kaon` (lib test) generated 4 warnings (2 duplicates) (run `cargo fix --lib -p kaon --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kaon-773552a94f49e6fa)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test common::args::test::test ... ok
[INFO] [stdout] test common::args::test::test_to_args ... ok
[INFO] [stdout] test common::args::test::test_varidic_args ... ok
[INFO] [stdout] test common::immutable_string::test::test_add ... ok
[INFO] [stdout] test common::immutable_string::test::test_deref ... ok
[INFO] [stdout] test common::immutable_string::test::test_immutable_str ... ok
[INFO] [stdout] test common::state::test::test_state ... ok
[INFO] [stdout] test common::value::test::test_size_of_value ... ok
[INFO] [stdout] test common::value::test::test_to_value ... ok
[INFO] [stdout] test compiler::lexer::test::test_lexer ... ok
[INFO] [stdout] test common::immutable_string::test::test_add_assign ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_api.rs (/opt/rustwide/target/debug/deps/test_api-a34bbdcfed6ca874)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_compiler.rs (/opt/rustwide/target/debug/deps/test_compiler-25a3daea7977aa3f)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test compile_binary ... ok
[INFO] [stdout] test compile_number ... ok
[INFO] [stdout] test test_compiler ... ok
[INFO] [stdout] test compile_unary ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_error.rs (/opt/rustwide/target/debug/deps/test_error-6e2825cc6809741b)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_one_line ... ok
[INFO] [stdout] test test_warning ... ok
[INFO] [stdout] test test_multiline_error ... ok
[INFO] [stderr]      Running tests/test_lexer.rs (/opt/rustwide/target/debug/deps/test_lexer-69df0e20cbcbfb8a)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tokenize_numbers ... ok
[INFO] [stdout] test tokenize_bin_op ... ok
[INFO] [stdout] test tokenize_whitespace ... ok
[INFO] [stdout] test tokenize_eof ... ok
[INFO] [stdout] test tokenize_sym ... ok
[INFO] [stdout] test tokenize_number ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_parser.rs (/opt/rustwide/target/debug/deps/test_parser-6aac194e71dda670)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test parse_bin_expr ... ok
[INFO] [stdout] test parse_literal ... ok
[INFO] [stdout] test test_parser ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_vm.rs (/opt/rustwide/target/debug/deps/test_vm-8529b1d04cd96d7f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test opcode_div ... ok
[INFO] [stdout] test opcode_add ... ok
[INFO] [stdout] test opcode_sub ... ok
[INFO] [stdout] test opcode_load ... ok
[INFO] [stdout] test opcode_mul ... ok
[INFO] [stdout] test opcode_neg ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kaon
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - Kaon (line 81) ... ok
[INFO] [stdout] test src/common/immutable_string.rs - common::immutable_string::ImmutableString (line 15) ... ok
[INFO] [stdout] test src/common/map.rs - common::map::Map (line 19) ... ok
[INFO] [stdout] test src/lib.rs - Kaon::compile_ast (line 185) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.65s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "db5305a922223e47770dd3c15a44cf1ce7ac6fba0fdea118880a79418ed6028b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db5305a922223e47770dd3c15a44cf1ce7ac6fba0fdea118880a79418ed6028b", kill_on_drop: false }`
[INFO] [stdout] db5305a922223e47770dd3c15a44cf1ce7ac6fba0fdea118880a79418ed6028b
