[INFO] fetching crate cargo-sym 0.0.6...
[INFO] testing cargo-sym-0.0.6 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate cargo-sym 0.0.6 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate cargo-sym 0.0.6 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-sym 0.0.6
[INFO] finished tweaking crates.io crate cargo-sym 0.0.6
[INFO] tweaked toml for crates.io crate cargo-sym 0.0.6 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42b0c4e62e0a122943541d38c554fd2cccf776a856bee010d24b0dbe8f87cb73
[INFO] running `Command { std: "docker" "start" "-a" "42b0c4e62e0a122943541d38c554fd2cccf776a856bee010d24b0dbe8f87cb73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42b0c4e62e0a122943541d38c554fd2cccf776a856bee010d24b0dbe8f87cb73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42b0c4e62e0a122943541d38c554fd2cccf776a856bee010d24b0dbe8f87cb73", kill_on_drop: false }`
[INFO] [stdout] 42b0c4e62e0a122943541d38c554fd2cccf776a856bee010d24b0dbe8f87cb73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d51cc6a4fe90056b2230442e58a0646353a510c59a60f3e664ea741b656ea79
[INFO] running `Command { std: "docker" "start" "-a" "5d51cc6a4fe90056b2230442e58a0646353a510c59a60f3e664ea741b656ea79", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling scroll v0.3.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling capstone-sys v0.2.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling scroll_derive v0.3.0
[INFO] [stderr]    Compiling goblin v0.0.8
[INFO] [stderr]    Compiling capstone3 v0.1.0
[INFO] [stderr]    Compiling cargo-sym v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut hex_buffer = &mut stack_buffer[..column_width * NCOLUMNS];
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |     let mut bytes = &mut Cursor::new(&buffer);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.55s
[INFO] running `Command { std: "docker" "inspect" "5d51cc6a4fe90056b2230442e58a0646353a510c59a60f3e664ea741b656ea79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d51cc6a4fe90056b2230442e58a0646353a510c59a60f3e664ea741b656ea79", kill_on_drop: false }`
[INFO] [stdout] 5d51cc6a4fe90056b2230442e58a0646353a510c59a60f3e664ea741b656ea79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4da4fbe378faf5d66f9283e2c7f6fa0842a3306f252e513907ab5a6b64ea137
[INFO] running `Command { std: "docker" "start" "-a" "c4da4fbe378faf5d66f9283e2c7f6fa0842a3306f252e513907ab5a6b64ea137", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cargo-sym v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut hex_buffer = &mut stack_buffer[..column_width * NCOLUMNS];
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |     let mut bytes = &mut Cursor::new(&buffer);
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "c4da4fbe378faf5d66f9283e2c7f6fa0842a3306f252e513907ab5a6b64ea137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4da4fbe378faf5d66f9283e2c7f6fa0842a3306f252e513907ab5a6b64ea137", kill_on_drop: false }`
[INFO] [stdout] c4da4fbe378faf5d66f9283e2c7f6fa0842a3306f252e513907ab5a6b64ea137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a6ba638951a19f266f1a9b9d2744b99c572c3459e126b03eefa5ba57fc3ad35f
[INFO] running `Command { std: "docker" "start" "-a" "a6ba638951a19f266f1a9b9d2744b99c572c3459e126b03eefa5ba57fc3ad35f", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut hex_buffer = &mut stack_buffer[..column_width * NCOLUMNS];
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:404:9
[INFO] [stderr]     |
[INFO] [stderr] 404 |     let mut bytes = &mut Cursor::new(&buffer);
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_sym-fa9ebac5a06eb0e6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a6ba638951a19f266f1a9b9d2744b99c572c3459e126b03eefa5ba57fc3ad35f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6ba638951a19f266f1a9b9d2744b99c572c3459e126b03eefa5ba57fc3ad35f", kill_on_drop: false }`
[INFO] [stdout] a6ba638951a19f266f1a9b9d2744b99c572c3459e126b03eefa5ba57fc3ad35f