Nov 28 09:53:20.908 INFO checking akuraj/learn_rust against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 09:53:20.909 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-5/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 09:53:21.418 INFO [stdout] 0ead598271ae9575fdeceed7e28563827e2d9106197b3a314dcd1534780b1961
Nov 28 09:53:21.420 INFO running `"docker" "start" "-a" "0ead598271ae9575fdeceed7e28563827e2d9106197b3a314dcd1534780b1961"`
Nov 28 09:53:23.988 INFO [stderr] usermod: no changes
Nov 28 09:53:24.072 INFO [stderr]     Checking learn_rust v0.1.0 (/source)
Nov 28 09:53:24.811 INFO [stderr] warning: unused variable: `x`
Nov 28 09:53:24.812 INFO [stderr]  --> src/test_lifetimes.rs:1:34
Nov 28 09:53:24.813 INFO [stderr]   |
Nov 28 09:53:24.814 INFO [stderr] 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Nov 28 09:53:24.814 INFO [stderr]   |                                  ^ help: consider using `_x` instead
Nov 28 09:53:24.815 INFO [stderr]   |
Nov 28 09:53:24.816 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 28 09:53:24.816 INFO [stderr] 
Nov 28 09:53:24.817 INFO [stderr] warning: unused variable: `z`
Nov 28 09:53:24.817 INFO [stderr]  --> src/test_lifetimes.rs:1:58
Nov 28 09:53:24.818 INFO [stderr]   |
Nov 28 09:53:24.818 INFO [stderr] 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Nov 28 09:53:24.819 INFO [stderr]   |                                                          ^ help: consider using `_z` instead
Nov 28 09:53:24.820 INFO [stderr] 
Nov 28 09:53:24.820 INFO [stderr] warning: variable `a` is assigned to, but never used
Nov 28 09:53:24.821 INFO [stderr]  --> src/test_lifetimes.rs:9:9
Nov 28 09:53:24.821 INFO [stderr]   |
Nov 28 09:53:24.821 INFO [stderr] 9 |     let a: &u32;
Nov 28 09:53:24.821 INFO [stderr]   |         ^
Nov 28 09:53:24.821 INFO [stderr]   |
Nov 28 09:53:24.821 INFO [stderr]   = note: consider using `_a` instead
Nov 28 09:53:24.821 INFO [stderr] 
Nov 28 09:53:24.821 INFO [stderr] warning: value assigned to `a` is never read
Nov 28 09:53:24.821 INFO [stderr]   --> src/test_lifetimes.rs:15:9
Nov 28 09:53:24.821 INFO [stderr]    |
Nov 28 09:53:24.821 INFO [stderr] 15 |         a = {
Nov 28 09:53:24.821 INFO [stderr]    |         ^
Nov 28 09:53:24.821 INFO [stderr]    |
Nov 28 09:53:24.821 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 28 09:53:24.821 INFO [stderr] 
Nov 28 09:53:24.990 INFO [stderr] warning: unused variable: `x`
Nov 28 09:53:24.990 INFO [stderr]  --> src/test_lifetimes.rs:1:34
Nov 28 09:53:24.990 INFO [stderr]   |
Nov 28 09:53:24.990 INFO [stderr] 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Nov 28 09:53:24.990 INFO [stderr]   |                                  ^ help: consider using `_x` instead
Nov 28 09:53:24.990 INFO [stderr]   |
Nov 28 09:53:24.990 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 28 09:53:24.990 INFO [stderr] 
Nov 28 09:53:24.990 INFO [stderr] warning: unused variable: `z`
Nov 28 09:53:24.990 INFO [stderr]  --> src/test_lifetimes.rs:1:58
Nov 28 09:53:24.990 INFO [stderr]   |
Nov 28 09:53:24.990 INFO [stderr] 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Nov 28 09:53:24.990 INFO [stderr]   |                                                          ^ help: consider using `_z` instead
Nov 28 09:53:24.990 INFO [stderr] 
Nov 28 09:53:24.993 INFO [stderr] warning: variable `a` is assigned to, but never used
Nov 28 09:53:24.993 INFO [stderr]  --> src/test_lifetimes.rs:9:9
Nov 28 09:53:24.993 INFO [stderr]   |
Nov 28 09:53:24.993 INFO [stderr] 9 |     let a: &u32;
Nov 28 09:53:24.993 INFO [stderr]   |         ^
Nov 28 09:53:24.993 INFO [stderr]   |
Nov 28 09:53:24.993 INFO [stderr]   = note: consider using `_a` instead
Nov 28 09:53:24.993 INFO [stderr] 
Nov 28 09:53:24.993 INFO [stderr] warning: value assigned to `a` is never read
Nov 28 09:53:24.993 INFO [stderr]   --> src/test_lifetimes.rs:15:9
Nov 28 09:53:24.993 INFO [stderr]    |
Nov 28 09:53:24.993 INFO [stderr] 15 |         a = {
Nov 28 09:53:24.993 INFO [stderr]    |         ^
Nov 28 09:53:24.993 INFO [stderr]    |
Nov 28 09:53:24.993 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 28 09:53:24.993 INFO [stderr] 
Nov 28 09:53:25.064 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
Nov 28 09:53:25.070 INFO [stderr] su: No module specific data is present
Nov 28 09:53:26.514 INFO running `"docker" "inspect" "0ead598271ae9575fdeceed7e28563827e2d9106197b3a314dcd1534780b1961"`
Nov 28 09:53:26.853 INFO running `"docker" "rm" "-f" "0ead598271ae9575fdeceed7e28563827e2d9106197b3a314dcd1534780b1961"`
Nov 28 09:53:27.173 INFO [stdout] 0ead598271ae9575fdeceed7e28563827e2d9106197b3a314dcd1534780b1961