[INFO] fetching crate cargo2 0.2.2...
[INFO] checking cargo2-0.2.2 against beta for pr-78714
[INFO] extracting crate cargo2 0.2.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate cargo2 0.2.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo2 0.2.2
[INFO] finished tweaking crates.io crate cargo2 0.2.2
[INFO] tweaked toml for crates.io crate cargo2 0.2.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6bfd92fa3df326ee537c4682cebb9fd89ad70b30b0b7fd1280d0ee17968fa4e5
[INFO] running `Command { std: "docker" "start" "-a" "6bfd92fa3df326ee537c4682cebb9fd89ad70b30b0b7fd1280d0ee17968fa4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bfd92fa3df326ee537c4682cebb9fd89ad70b30b0b7fd1280d0ee17968fa4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bfd92fa3df326ee537c4682cebb9fd89ad70b30b0b7fd1280d0ee17968fa4e5", kill_on_drop: false }`
[INFO] [stdout] 6bfd92fa3df326ee537c4682cebb9fd89ad70b30b0b7fd1280d0ee17968fa4e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5e83bac7a5992050e80523dc6151fd60c3037d679fc77f52e1d43143924dcd06
[INFO] running `Command { std: "docker" "start" "-a" "5e83bac7a5992050e80523dc6151fd60c3037d679fc77f52e1d43143924dcd06", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking cargo2 v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde`
[INFO] [stdout]  --> src/metadata.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde`
[INFO] [stdout]  --> src/metadata.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |         ("bundle", Some(m)) => {}
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |         ("check", Some(m)) => {}
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> src/license.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let entry = license_map
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |         ("bundle", Some(m)) => {}
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |         ("check", Some(m)) => {}
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> src/license.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let entry = license_map
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/license.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut parts = split_license(license);
[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/license.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut parts = split_license(license);
[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: function is never used: `check_licenses`
[INFO] [stdout]   --> src/license.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn check_licenses() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bundle_licenses`
[INFO] [stdout]   --> src/license.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn bundle_licenses() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `split_multiple`
[INFO] [stdout]  --> src/util.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn split_multiple() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_licenses`
[INFO] [stdout]   --> src/license.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn check_licenses() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bundle_licenses`
[INFO] [stdout]   --> src/license.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn bundle_licenses() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `split_multiple`
[INFO] [stdout]  --> src/util.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn split_multiple() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "5e83bac7a5992050e80523dc6151fd60c3037d679fc77f52e1d43143924dcd06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e83bac7a5992050e80523dc6151fd60c3037d679fc77f52e1d43143924dcd06", kill_on_drop: false }`
[INFO] [stdout] 5e83bac7a5992050e80523dc6151fd60c3037d679fc77f52e1d43143924dcd06