[INFO] fetching crate sylt-machine 0.1.0...
[INFO] checking sylt-machine-0.1.0 against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] extracting crate sylt-machine 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate sylt-machine 0.1.0
[INFO] finished tweaking crates.io crate sylt-machine 0.1.0
[INFO] tweaked toml for crates.io crate sylt-machine 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sylt-machine 0.1.0 on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "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" "+52995a223f2919dd3e2e427231db90a257350ded" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to highest compatible versions
[INFO] [stderr]       Adding owo-colors v2.1.0 (available: v4.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--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-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b
[INFO] running `Command { std: "docker" "start" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.27
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling lazy_static v1.5.1
[INFO] [stderr]     Checking owo-colors v2.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling syn v3.0.9
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling sylt-macro v0.1.0
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]     Checking sylt-tokenizer v0.1.0
[INFO] [stderr]     Checking sylt-common v0.1.0
[INFO] [stderr]     Checking sylt-machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/vm.rs:18:28
[INFO] [stdout]     |
[INFO] [stdout]  12 |   macro_rules! error {
[INFO] [stdout] ...
[INFO] [stdout]  18 |               let msg = Some(format!($( $msg ),*).into());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |                       value => error!(
[INFO] [stdout]     |  ______________________________-
[INFO] [stdout] 416 | |                         self,
[INFO] [stdout] 417 | |                         RuntimeError::ValueError(op, vec![value]),
[INFO] [stdout] 418 | |                         "Not a function {:?}",
[INFO] [stdout] 419 | |                         value
[INFO] [stdout] 420 | |                     ),
[INFO] [stdout]     | |_____________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: you can instead use the fully-qualified path `<std::string::String as Into<std::string::String>::into(val) to avoid triggering this lint
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/vm.rs:18:28
[INFO] [stdout]     |
[INFO] [stdout]  12 | macro_rules! error {
[INFO] [stdout] ...
[INFO] [stdout]  18 |             let msg = Some(format!($( $msg ),*).into());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 809 |                             Err(ek) => error!(self, ek, "Failed in external function"),
[INFO] [stdout]     |                                        ----------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: you can instead use the fully-qualified path `<std::string::String as Into<std::string::String>::into(val) to avoid triggering this lint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vm.rs:257:24
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn stack_from_base(&self, base: usize) -> Cow<[Value]> {
[INFO] [stdout]     |                        ^^^^^                  ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn stack_from_base(&self, base: usize) -> Cow<'_, [Value]> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sylt-machine` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/vm.rs:18:28
[INFO] [stdout]     |
[INFO] [stdout]  12 |   macro_rules! error {
[INFO] [stdout] ...
[INFO] [stdout]  18 |               let msg = Some(format!($( $msg ),*).into());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |                       value => error!(
[INFO] [stdout]     |  ______________________________-
[INFO] [stdout] 416 | |                         self,
[INFO] [stdout] 417 | |                         RuntimeError::ValueError(op, vec![value]),
[INFO] [stdout] 418 | |                         "Not a function {:?}",
[INFO] [stdout] 419 | |                         value
[INFO] [stdout] 420 | |                     ),
[INFO] [stdout]     | |_____________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: you can instead use the fully-qualified path `<std::string::String as Into<std::string::String>::into(val) to avoid triggering this lint
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/vm.rs:18:28
[INFO] [stdout]     |
[INFO] [stdout]  12 | macro_rules! error {
[INFO] [stdout] ...
[INFO] [stdout]  18 |             let msg = Some(format!($( $msg ),*).into());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 809 |                             Err(ek) => error!(self, ek, "Failed in external function"),
[INFO] [stdout]     |                                        ----------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: you can instead use the fully-qualified path `<std::string::String as Into<std::string::String>::into(val) to avoid triggering this lint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vm.rs:257:24
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn stack_from_base(&self, base: usize) -> Cow<[Value]> {
[INFO] [stdout]     |                        ^^^^^                  ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn stack_from_base(&self, base: usize) -> Cow<'_, [Value]> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sylt-machine` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b", kill_on_drop: false }`
[INFO] [stdout] e6f249511c46bfdbaf6941c298cad7a4471674fc44aa84882da61beb5d9a525b
