[INFO] crate cargo2 0.2.2 is already in cache
[INFO] checking cargo2-0.2.2 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate cargo2 0.2.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cargo2 0.2.2 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dda498dc1bb6d83ae3a8f7567541806b51d3dbe61003a5985310218c88fff677
[INFO] running `"docker" "start" "-a" "dda498dc1bb6d83ae3a8f7567541806b51d3dbe61003a5985310218c88fff677"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking cargo2 v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `serde`
[INFO] [stderr]  --> src/metadata.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde`
[INFO] [stderr]  --> src/metadata.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]   --> src/main.rs:31:25
[INFO] [stderr]    |
[INFO] [stderr] 31 |         ("bundle", Some(m)) => {}
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]   --> src/main.rs:32:24
[INFO] [stderr]    |
[INFO] [stderr] 32 |         ("check", Some(m)) => {}
[INFO] [stderr]    |                        ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]   --> src/license.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let entry = license_map
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/license.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut parts = split_license(license);
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]   --> src/main.rs:31:25
[INFO] [stderr]    |
[INFO] [stderr] 31 |         ("bundle", Some(m)) => {}
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]   --> src/main.rs:32:24
[INFO] [stderr]    |
[INFO] [stderr] 32 |         ("check", Some(m)) => {}
[INFO] [stderr]    |                        ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]   --> src/license.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let entry = license_map
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/license.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut parts = split_license(license);
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_licenses`
[INFO] [stderr]   --> src/license.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn check_licenses() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bundle_licenses`
[INFO] [stderr]   --> src/license.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn bundle_licenses() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `split_multiple`
[INFO] [stderr]  --> src/util.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn split_multiple() {}
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_licenses`
[INFO] [stderr]   --> src/license.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn check_licenses() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bundle_licenses`
[INFO] [stderr]   --> src/license.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn bundle_licenses() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `split_multiple`
[INFO] [stderr]  --> src/util.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn split_multiple() {}
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.18s
[INFO] running `"docker" "inspect" "dda498dc1bb6d83ae3a8f7567541806b51d3dbe61003a5985310218c88fff677"`
[INFO] running `"docker" "rm" "-f" "dda498dc1bb6d83ae3a8f7567541806b51d3dbe61003a5985310218c88fff677"`
[INFO] [stdout] dda498dc1bb6d83ae3a8f7567541806b51d3dbe61003a5985310218c88fff677