[INFO] fetching crate pr47 0.0.2...
[INFO] checking pr47-0.0.2 against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] extracting crate pr47 0.0.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pr47 0.0.2 on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pr47 0.0.2
[INFO] finished tweaking crates.io crate pr47 0.0.2
[INFO] tweaked toml for crates.io crate pr47 0.0.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec1eedf64cc31d19f354e5ff660521168716db605df014ea19fd79b600d10cd1
[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" "ec1eedf64cc31d19f354e5ff660521168716db605df014ea19fd79b600d10cd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec1eedf64cc31d19f354e5ff660521168716db605df014ea19fd79b600d10cd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec1eedf64cc31d19f354e5ff660521168716db605df014ea19fd79b600d10cd1", kill_on_drop: false }`
[INFO] [stdout] ec1eedf64cc31d19f354e5ff660521168716db605df014ea19fd79b600d10cd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba0321ff9a9547ad0246387ae1c8048390da09caa4a407330e43b19de5da2339
[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" "ba0321ff9a9547ad0246387ae1c8048390da09caa4a407330e43b19de5da2339", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling paste v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking pr47 v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::util::type_traits::GeneralRef`
[INFO] [stdout]  --> src/bind/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::util::type_traits::GeneralRef;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Pr47Error`
[INFO] [stdout]  --> src/bind/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::error::Pr47Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::type_traits::GeneralRef`
[INFO] [stdout]  --> src/bind/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::util::type_traits::GeneralRef;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::error::Pr47Error`
[INFO] [stdout]  --> src/bind/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::error::Pr47Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/bind/casts/from.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |     default fn cast_copy(ptr: &Pr47PtrNonNull) -> Result<Self::CastResult, Pr47Error> {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]  --> src/bind/casts/into.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     default fn cast_from_any(t: T) -> Result<Pr47Ptr, Pr47Error> {
[INFO] [stdout]   |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ByteValue`
[INFO] [stdout]    --> src/vm/types.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     ByteValue(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IntValue`
[INFO] [stdout]    --> src/vm/types.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     IntValue(i64),
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FloatValue`
[INFO] [stdout]    --> src/vm/types.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     FloatValue(f64),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BoolValue`
[INFO] [stdout]    --> src/vm/types.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     BoolValue(bool),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CharValue`
[INFO] [stdout]    --> src/vm/types.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     CharValue(char)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `static_stack`
[INFO] [stdout]   --> src/vm/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     static_stack: Vec<Vec<Pr47Value>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `dynamic_stack`
[INFO] [stdout]   --> src/vm/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     dynamic_stack: Vec<Vec<Pr47Ptr>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `heap`
[INFO] [stdout]   --> src/vm/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     heap: Vec<Pr47Ptr>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ffi_funcs`
[INFO] [stdout]   --> src/vm/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ffi_funcs: BTreeMap<String, Box<dyn Pr47Func>>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/bind/casts/from.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |     default fn cast_copy(ptr: &Pr47PtrNonNull) -> Result<Self::CastResult, Pr47Error> {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]  --> src/bind/casts/into.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     default fn cast_from_any(t: T) -> Result<Pr47Ptr, Pr47Error> {
[INFO] [stdout]   |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ByteValue`
[INFO] [stdout]    --> src/vm/types.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     ByteValue(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IntValue`
[INFO] [stdout]    --> src/vm/types.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     IntValue(i64),
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FloatValue`
[INFO] [stdout]    --> src/vm/types.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     FloatValue(f64),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BoolValue`
[INFO] [stdout]    --> src/vm/types.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     BoolValue(bool),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CharValue`
[INFO] [stdout]    --> src/vm/types.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     CharValue(char)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `static_stack`
[INFO] [stdout]   --> src/vm/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     static_stack: Vec<Vec<Pr47Value>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `dynamic_stack`
[INFO] [stdout]   --> src/vm/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     dynamic_stack: Vec<Vec<Pr47Ptr>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `heap`
[INFO] [stdout]   --> src/vm/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     heap: Vec<Pr47Ptr>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ffi_funcs`
[INFO] [stdout]   --> src/vm/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ffi_funcs: BTreeMap<String, Box<dyn Pr47Func>>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `Command { std: "docker" "inspect" "ba0321ff9a9547ad0246387ae1c8048390da09caa4a407330e43b19de5da2339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba0321ff9a9547ad0246387ae1c8048390da09caa4a407330e43b19de5da2339", kill_on_drop: false }`
[INFO] [stdout] ba0321ff9a9547ad0246387ae1c8048390da09caa4a407330e43b19de5da2339