[INFO] fetching crate alco 0.1.0...
[INFO] checking alco-0.1.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate alco 0.1.0 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate alco 0.1.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alco 0.1.0
[INFO] finished tweaking crates.io crate alco 0.1.0
[INFO] tweaked toml for crates.io crate alco 0.1.0 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e0d7ade5761342e13268ac0f460bc6e6fce0b0df6aa3e6df3fe1b6f2a0c46bb
[INFO] running `Command { std: "docker" "start" "-a" "7e0d7ade5761342e13268ac0f460bc6e6fce0b0df6aa3e6df3fe1b6f2a0c46bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e0d7ade5761342e13268ac0f460bc6e6fce0b0df6aa3e6df3fe1b6f2a0c46bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e0d7ade5761342e13268ac0f460bc6e6fce0b0df6aa3e6df3fe1b6f2a0c46bb", kill_on_drop: false }`
[INFO] [stdout] 7e0d7ade5761342e13268ac0f460bc6e6fce0b0df6aa3e6df3fe1b6f2a0c46bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5581309e9e0094d41db55173a05c65354e967ab59c34f8ea5f64db8d3236ec35
[INFO] running `Command { std: "docker" "start" "-a" "5581309e9e0094d41db55173a05c65354e967ab59c34f8ea5f64db8d3236ec35", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking alco v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `arch`
[INFO] [stdout]   --> src/lib.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     arch: &str,
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_arch`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_calibration`
[INFO] [stdout]    --> src/lib.rs:241:27
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let (calibration, old_calibration) =
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_calibration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_stats`
[INFO] [stdout]    --> src/lib.rs:248:25
[INFO] [stdout]     |
[INFO] [stdout] 248 |             let (stats, old_stats) = run_bench(&arch, &executable, i, &[a], name, allow_aslr  );
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_stats`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `l1_hits`
[INFO] [stdout]    --> src/lib.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     l1_hits: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `l3_hits`
[INFO] [stdout]    --> src/lib.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 |     l3_hits: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram_hits`
[INFO] [stdout]    --> src/lib.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 202 |     ram_hits: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arch`
[INFO] [stdout]   --> src/lib.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     arch: &str,
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_arch`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_calibration`
[INFO] [stdout]    --> src/lib.rs:241:27
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let (calibration, old_calibration) =
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_calibration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_stats`
[INFO] [stdout]    --> src/lib.rs:248:25
[INFO] [stdout]     |
[INFO] [stdout] 248 |             let (stats, old_stats) = run_bench(&arch, &executable, i, &[a], name, allow_aslr  );
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_stats`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `l1_hits`
[INFO] [stdout]    --> src/lib.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     l1_hits: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `l3_hits`
[INFO] [stdout]    --> src/lib.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 |     l3_hits: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram_hits`
[INFO] [stdout]    --> src/lib.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 202 |     ram_hits: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.76s
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5581309e9e0094d41db55173a05c65354e967ab59c34f8ea5f64db8d3236ec35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5581309e9e0094d41db55173a05c65354e967ab59c34f8ea5f64db8d3236ec35", kill_on_drop: false }`
[INFO] [stdout] 5581309e9e0094d41db55173a05c65354e967ab59c34f8ea5f64db8d3236ec35