[INFO] fetching crate vec-with-positions 3.0.0-alpha.30...
[INFO] testing vec-with-positions-3.0.0-alpha.30 against 1.90.0 for beta-1.91-3
[INFO] extracting crate vec-with-positions 3.0.0-alpha.30 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate vec-with-positions 3.0.0-alpha.30
[INFO] finished tweaking crates.io crate vec-with-positions 3.0.0-alpha.30
[INFO] tweaked toml for crates.io crate vec-with-positions 3.0.0-alpha.30 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vec-with-positions 3.0.0-alpha.30 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf9ed15bdea5e7c3c05efea5a7060ebf0be12d0e4a6b0b8c69bf7dfbea0e9765
[INFO] running `Command { std: "docker" "start" "-a" "bf9ed15bdea5e7c3c05efea5a7060ebf0be12d0e4a6b0b8c69bf7dfbea0e9765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf9ed15bdea5e7c3c05efea5a7060ebf0be12d0e4a6b0b8c69bf7dfbea0e9765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf9ed15bdea5e7c3c05efea5a7060ebf0be12d0e4a6b0b8c69bf7dfbea0e9765", kill_on_drop: false }`
[INFO] [stdout] bf9ed15bdea5e7c3c05efea5a7060ebf0be12d0e4a6b0b8c69bf7dfbea0e9765
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32c95d9fe01fc02d54890412e8af455693e0af5bae6c4d2565442bb68fbe865a
[INFO] running `Command { std: "docker" "start" "-a" "32c95d9fe01fc02d54890412e8af455693e0af5bae6c4d2565442bb68fbe865a", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec-with-positions v3.0.0-alpha.30 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |             let mut p2 = p.position_mut();
[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/lib.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let mut p2 = p.position_mut();
[INFO] [stdout]    |                 ----^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "32c95d9fe01fc02d54890412e8af455693e0af5bae6c4d2565442bb68fbe865a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32c95d9fe01fc02d54890412e8af455693e0af5bae6c4d2565442bb68fbe865a", kill_on_drop: false }`
[INFO] [stdout] 32c95d9fe01fc02d54890412e8af455693e0af5bae6c4d2565442bb68fbe865a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 883aebef9ec39af21169e45cff58f2297d3f22d948a7793d3e1aacfaefb31de7
[INFO] running `Command { std: "docker" "start" "-a" "883aebef9ec39af21169e45cff58f2297d3f22d948a7793d3e1aacfaefb31de7", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |             let mut p2 = p.position_mut();
[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/lib.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let mut p2 = p.position_mut();
[INFO] [stdout]    |                 ----^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling vec-with-positions v3.0.0-alpha.30 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `crate::VecWithOnePosition`, `crate::VecWithPositions`
[INFO] [stdout]    --> src/lib.rs:228:27
[INFO] [stdout]     |
[INFO] [stdout] 228 |     use crate::{Position, VecWithOnePosition, VecWithPositions};
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^ no `VecWithPositions` in the root
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           no `VecWithOnePosition` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |             let mut p2 = p.position_mut();
[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/lib.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let mut p2 = p.position_mut();
[INFO] [stdout]    |                 ----^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vec-with-positions` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "883aebef9ec39af21169e45cff58f2297d3f22d948a7793d3e1aacfaefb31de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883aebef9ec39af21169e45cff58f2297d3f22d948a7793d3e1aacfaefb31de7", kill_on_drop: false }`
[INFO] [stdout] 883aebef9ec39af21169e45cff58f2297d3f22d948a7793d3e1aacfaefb31de7