[INFO] fetching crate vec-with-positions 3.0.0-alpha.30...
[INFO] checking vec-with-positions-3.0.0-alpha.30 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate vec-with-positions 3.0.0-alpha.30 into /workspace/builds/worker-2-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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vec-with-positions 3.0.0-alpha.30 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]     Blocking waiting for file lock on package cache
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e8b093176697423fb43b4270123206f75c292649a48cc0b0fa0295732e3568fe
[INFO] running `Command { std: "docker" "start" "-a" "e8b093176697423fb43b4270123206f75c292649a48cc0b0fa0295732e3568fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8b093176697423fb43b4270123206f75c292649a48cc0b0fa0295732e3568fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b093176697423fb43b4270123206f75c292649a48cc0b0fa0295732e3568fe", kill_on_drop: false }`
[INFO] [stdout] e8b093176697423fb43b4270123206f75c292649a48cc0b0fa0295732e3568fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7271aa5d7d80b81c29ec61ecebb1ded9edad90090f42b3e61d5e9a050375b13f
[INFO] running `Command { std: "docker" "start" "-a" "7271aa5d7d80b81c29ec61ecebb1ded9edad90090f42b3e61d5e9a050375b13f", kill_on_drop: false }`
[INFO] [stderr]     Checking 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] 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" "7271aa5d7d80b81c29ec61ecebb1ded9edad90090f42b3e61d5e9a050375b13f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7271aa5d7d80b81c29ec61ecebb1ded9edad90090f42b3e61d5e9a050375b13f", kill_on_drop: false }`
[INFO] [stdout] 7271aa5d7d80b81c29ec61ecebb1ded9edad90090f42b3e61d5e9a050375b13f