[INFO] fetching crate em 0.2.0...
[INFO] extracting crate em 0.2.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/em/0.2.0
[INFO] extracting crate em 0.2.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/em/0.2.0
[INFO] validating manifest of em-0.2.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of em-0.2.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing em-0.2.0
[INFO] finished frobbing em-0.2.0
[INFO] frobbed toml for em-0.2.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/em/0.2.0/Cargo.toml
[INFO] started frobbing em-0.2.0
[INFO] finished frobbing em-0.2.0
[INFO] frobbed toml for em-0.2.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/em/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking em-0.2.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-6/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/em/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8b36e5e60778a7b6f218cec797e7e5972bc6877f640ff4ebf3b91c1bc7ae76dd
[INFO] running `"docker" "start" "-a" "8b36e5e60778a7b6f218cec797e7e5972bc6877f640ff4ebf3b91c1bc7ae76dd"`
[INFO] [stderr]     Checking syn v0.15.39
[INFO] [stderr]     Checking em v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]   --> src/lib.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let mut name = String::new();
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_vector` is never read
[INFO] [stderr]   --> src/lib.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let mut is_vector = false;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ty` is never read
[INFO] [stderr]   --> src/lib.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut ty = EmuType::Null;
[INFO] [stderr]    |                 ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `for_var_name` is never read
[INFO] [stderr]    --> src/lib.rs:224:25
[INFO] [stderr]     |
[INFO] [stderr] 224 |                 let mut for_var_name = String::new();
[INFO] [stderr]     |                         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_precision_conversion` is never read
[INFO] [stderr]    --> src/lib.rs:361:25
[INFO] [stderr]     |
[INFO] [stderr] 361 |                 let mut is_precision_conversion = false;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_pub` is never read
[INFO] [stderr]    --> src/lib.rs:586:17
[INFO] [stderr]     |
[INFO] [stderr] 586 |         let mut is_pub = false;
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]    --> src/lib.rs:606:25
[INFO] [stderr]     |
[INFO] [stderr] 606 |                 let mut name = String::new();
[INFO] [stderr]     |                         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ty` is never read
[INFO] [stderr]    --> src/lib.rs:620:29
[INFO] [stderr]     |
[INFO] [stderr] 620 |                     let mut ty = EmuType::Null;
[INFO] [stderr]     |                             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_vector` is never read
[INFO] [stderr]    --> src/lib.rs:621:29
[INFO] [stderr]     |
[INFO] [stderr] 621 |                     let mut is_vector = false;
[INFO] [stderr]     |                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]   --> src/lib.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let mut name = String::new();
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_vector` is never read
[INFO] [stderr]   --> src/lib.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let mut is_vector = false;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ty` is never read
[INFO] [stderr]   --> src/lib.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut ty = EmuType::Null;
[INFO] [stderr]    |                 ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `for_var_name` is never read
[INFO] [stderr]    --> src/lib.rs:224:25
[INFO] [stderr]     |
[INFO] [stderr] 224 |                 let mut for_var_name = String::new();
[INFO] [stderr]     |                         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_precision_conversion` is never read
[INFO] [stderr]    --> src/lib.rs:361:25
[INFO] [stderr]     |
[INFO] [stderr] 361 |                 let mut is_precision_conversion = false;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_pub` is never read
[INFO] [stderr]    --> src/lib.rs:586:17
[INFO] [stderr]     |
[INFO] [stderr] 586 |         let mut is_pub = false;
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]    --> src/lib.rs:606:25
[INFO] [stderr]     |
[INFO] [stderr] 606 |                 let mut name = String::new();
[INFO] [stderr]     |                         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ty` is never read
[INFO] [stderr]    --> src/lib.rs:620:29
[INFO] [stderr]     |
[INFO] [stderr] 620 |                     let mut ty = EmuType::Null;
[INFO] [stderr]     |                             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_vector` is never read
[INFO] [stderr]    --> src/lib.rs:621:29
[INFO] [stderr]     |
[INFO] [stderr] 621 |                     let mut is_vector = false;
[INFO] [stderr]     |                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.25s
[INFO] running `"docker" "inspect" "8b36e5e60778a7b6f218cec797e7e5972bc6877f640ff4ebf3b91c1bc7ae76dd"`
[INFO] running `"docker" "rm" "-f" "8b36e5e60778a7b6f218cec797e7e5972bc6877f640ff4ebf3b91c1bc7ae76dd"`
[INFO] [stdout] 8b36e5e60778a7b6f218cec797e7e5972bc6877f640ff4ebf3b91c1bc7ae76dd