[INFO] fetching crate expresso 0.1.2...
[INFO] checking expresso-0.1.2 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate expresso 0.1.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate expresso 0.1.2 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expresso 0.1.2
[INFO] finished tweaking crates.io crate expresso 0.1.2
[INFO] tweaked toml for crates.io crate expresso 0.1.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate expresso 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc20f4e5876ff85d6e15e7915f24c5cfbdd7d6b1b64e6472c870941e230b8c05
[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" "dc20f4e5876ff85d6e15e7915f24c5cfbdd7d6b1b64e6472c870941e230b8c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc20f4e5876ff85d6e15e7915f24c5cfbdd7d6b1b64e6472c870941e230b8c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc20f4e5876ff85d6e15e7915f24c5cfbdd7d6b1b64e6472c870941e230b8c05", kill_on_drop: false }`
[INFO] [stdout] dc20f4e5876ff85d6e15e7915f24c5cfbdd7d6b1b64e6472c870941e230b8c05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69db7fe09fffcb8c0bd92750318bcc0d900b0f33ca707234ebafb96344e7a242
[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" "69db7fe09fffcb8c0bd92750318bcc0d900b0f33ca707234ebafb96344e7a242", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking expresso v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::tokenizer::Token`
[INFO] [stdout]  --> src/expression.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::tokenizer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::variable_storage::VariableStorage`
[INFO] [stdout]  --> src/expression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::variable_storage::VariableStorage;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OPERATORS`
[INFO] [stdout]  --> src/instructions.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::operator::{Operator,OPERATORS};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tokenizer::Token`
[INFO] [stdout]  --> src/variable_stack.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::tokenizer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/variable_storage.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tokenizer::Token`
[INFO] [stdout]  --> src/expression.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::tokenizer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::variable_storage::VariableStorage`
[INFO] [stdout]  --> src/expression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::variable_storage::VariableStorage;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OPERATORS`
[INFO] [stdout]  --> src/instructions.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::operator::{Operator,OPERATORS};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tokenizer::Token`
[INFO] [stdout]  --> src/variable_stack.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::tokenizer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/variable_storage.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::variable_storage::VariableStorage`
[INFO] [stdout]   --> src/tests.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::variable_storage::VariableStorage;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expresso::variable_storage::VariableStorage`
[INFO] [stdout]  --> src/expresso_main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use expresso::variable_storage::VariableStorage;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/expresso_main.rs:73:7
[INFO] [stdout]    |
[INFO] [stdout] 72 |                         todo!("setVar( {:?}, {:?} )", n, v );
[INFO] [stdout]    |                         ------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 73 |                         false
[INFO] [stdout]    |                         ^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expresso::variable_storage::VariableStorage`
[INFO] [stdout]  --> src/expresso_main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use expresso::variable_storage::VariableStorage;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/expresso_main.rs:73:7
[INFO] [stdout]    |
[INFO] [stdout] 72 |                         todo!("setVar( {:?}, {:?} )", n, v );
[INFO] [stdout]    |                         ------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 73 |                         false
[INFO] [stdout]    |                         ^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/expresso_main.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 |         machine.load_variable_storage( variable_filename );
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/expresso_main.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 |         machine.load_variable_storage( variable_filename );
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.47s
[INFO] running `Command { std: "docker" "inspect" "69db7fe09fffcb8c0bd92750318bcc0d900b0f33ca707234ebafb96344e7a242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69db7fe09fffcb8c0bd92750318bcc0d900b0f33ca707234ebafb96344e7a242", kill_on_drop: false }`
[INFO] [stdout] 69db7fe09fffcb8c0bd92750318bcc0d900b0f33ca707234ebafb96344e7a242