[INFO] fetching crate cao-lang 0.2.0...
[INFO] checking cao-lang-0.2.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate cao-lang 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate cao-lang 0.2.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cao-lang 0.2.0
[INFO] finished tweaking crates.io crate cao-lang 0.2.0
[INFO] tweaked toml for crates.io crate cao-lang 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-test v0.2.4
[INFO] [stderr]   Downloaded tracing-test-macro v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b3fa211fe19f3a2e5b0948a646b9fb4304df6c73dd044f2a2e12680c2451f86
[INFO] running `Command { std: "docker" "start" "-a" "3b3fa211fe19f3a2e5b0948a646b9fb4304df6c73dd044f2a2e12680c2451f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b3fa211fe19f3a2e5b0948a646b9fb4304df6c73dd044f2a2e12680c2451f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b3fa211fe19f3a2e5b0948a646b9fb4304df6c73dd044f2a2e12680c2451f86", kill_on_drop: false }`
[INFO] [stdout] 3b3fa211fe19f3a2e5b0948a646b9fb4304df6c73dd044f2a2e12680c2451f86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e76e7dfee36360d5beb903000171e9d1b9d35d29989259ed34a036aa8ab57162
[INFO] running `Command { std: "docker" "start" "-a" "e76e7dfee36360d5beb903000171e9d1b9d35d29989259ed34a036aa8ab57162", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking half v2.4.0
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[INFO] [stderr]    Compiling serde v1.0.197
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[INFO] [stderr]    Compiling serde_spanned v0.6.5
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[INFO] [stderr]    Compiling toml_edit v0.21.1
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling tracing-test-macro v0.2.4
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
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[INFO] [stderr]    Compiling proc-macro-crate v3.1.0
[INFO] [stderr]     Checking tracing-test v0.2.4
[INFO] [stderr]    Compiling toml v0.8.12
[INFO] [stderr]    Compiling num_enum_derive v0.7.2
[INFO] [stderr]    Compiling cao-lang v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num_enum v0.7.2
[INFO] [stdout] warning: unused import: `self::serde_impl::*`
[INFO] [stdout]   --> src/collections/handle_table.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub use self::serde_impl::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/compiler.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/compiler.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | use std::{convert::TryInto, str::FromStr};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/traits.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{any::type_name, convert::TryFrom};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/value.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/value.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/vm/instr_execution.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{convert::TryFrom, ptr::NonNull};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/vm/runtime/cao_lang_table.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     prelude::*,
[INFO] [stdout]   |     ---------- the item `Value` is already imported here
[INFO] [stdout] 5 |     value::Value,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]   --> src/vm/runtime.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Value` is already imported here
[INFO] [stdout] 12 |     value::Value,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Handle` is imported redundantly
[INFO] [stdout]   --> src/vm.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 |     collections::handle_table::{Handle, HandleTable},
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 16 |     instruction::Instruction,
[INFO] [stdout] 17 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Handle` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]   --> src/vm.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Value` is already imported here
[INFO] [stdout] 18 |     stdlib,
[INFO] [stdout] 19 |     value::Value,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/bytecode.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::serde_impl::*`
[INFO] [stdout]   --> src/collections/handle_table.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub use self::serde_impl::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/compiler.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/compiler.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | use std::{convert::TryInto, str::FromStr};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/stdlib/tests.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     value::Value,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 | use super::*;
[INFO] [stdout]   |     -------- the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vm` is imported redundantly
[INFO] [stdout]  --> src/stdlib/tests.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     vm::Vm,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 | use super::*;
[INFO] [stdout]   |     -------- the item `Vm` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/traits.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{any::type_name, convert::TryFrom};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/value.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/value.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/vm/instr_execution.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{convert::TryFrom, ptr::NonNull};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/vm/runtime/cao_lang_table.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     prelude::*,
[INFO] [stdout]   |     ---------- the item `Value` is already imported here
[INFO] [stdout] 5 |     value::Value,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Handle` is imported redundantly
[INFO] [stdout]   --> src/vm.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 |     collections::handle_table::{Handle, HandleTable},
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 16 |     instruction::Instruction,
[INFO] [stdout] 17 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Handle` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/bytecode.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> tests/test_tables.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CompileOptions` is imported redundantly
[INFO] [stdout]  --> benches/cao_lang_benches.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cao_lang::{compiler::CompileOptions, prelude::*};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^  ---------- the item `CompileOptions` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `Command { std: "docker" "inspect" "e76e7dfee36360d5beb903000171e9d1b9d35d29989259ed34a036aa8ab57162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e76e7dfee36360d5beb903000171e9d1b9d35d29989259ed34a036aa8ab57162", kill_on_drop: false }`
[INFO] [stdout] e76e7dfee36360d5beb903000171e9d1b9d35d29989259ed34a036aa8ab57162
