[INFO] fetching crate gronsfeld-cracker 0.1.0...
[INFO] checking gronsfeld-cracker-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate gronsfeld-cracker 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate gronsfeld-cracker 0.1.0
[INFO] finished tweaking crates.io crate gronsfeld-cracker 0.1.0
[INFO] tweaked toml for crates.io crate gronsfeld-cracker 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate gronsfeld-cracker 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding cipher-utils v0.2.0 (available: v0.3.0)
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gronsfeld v0.2.0
[INFO] [stderr]   Downloaded cipher-utils v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 165ac4a76b5cb54251ca74b2445e5cc19519dcd8307bbd669737f3b63c661bdd
[INFO] running `Command { std: "docker" "start" "-a" "165ac4a76b5cb54251ca74b2445e5cc19519dcd8307bbd669737f3b63c661bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "165ac4a76b5cb54251ca74b2445e5cc19519dcd8307bbd669737f3b63c661bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "165ac4a76b5cb54251ca74b2445e5cc19519dcd8307bbd669737f3b63c661bdd", kill_on_drop: false }`
[INFO] [stdout] 165ac4a76b5cb54251ca74b2445e5cc19519dcd8307bbd669737f3b63c661bdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1404c9a930564ccd67acca06662917ce915a94a82ce1b6c399375870d9aae535
[INFO] running `Command { std: "docker" "start" "-a" "1404c9a930564ccd67acca06662917ce915a94a82ce1b6c399375870d9aae535", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking cipher-utils v0.2.0
[INFO] [stderr]     Checking gronsfeld v0.2.0
[INFO] [stderr]     Checking gronsfeld-cracker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `key` is never read
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct GronsfeldCracker {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 10 |     alphabet: Option<String>,
[INFO] [stdout] 11 |     key: Option<u128>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `key` is never read
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct GronsfeldCracker {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 10 |     alphabet: Option<String>,
[INFO] [stdout] 11 |     key: Option<u128>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "1404c9a930564ccd67acca06662917ce915a94a82ce1b6c399375870d9aae535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1404c9a930564ccd67acca06662917ce915a94a82ce1b6c399375870d9aae535", kill_on_drop: false }`
[INFO] [stdout] 1404c9a930564ccd67acca06662917ce915a94a82ce1b6c399375870d9aae535