[INFO] updating cached repository https://github.com/agalakhov/nc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 22019f497a9f4ae5cae4665e2ce95fb67fe7d7a1
[INFO] testing agalakhov/nc against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fagalakhov%2Fnc" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/agalakhov/nc on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/agalakhov/nc
[INFO] finished tweaking git repo https://github.com/agalakhov/nc
[INFO] tweaked toml for git repo https://github.com/agalakhov/nc written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/agalakhov/nc already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] e96f3111d87cb516e33463aac47525c12b3ed1302a59e2e42146db9bb2a9b25b
[INFO] running `"docker" "start" "-a" "e96f3111d87cb516e33463aac47525c12b3ed1302a59e2e42146db9bb2a9b25b"`
[INFO] [stderr]    Compiling nc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected one of `)`, `,`, or `::`, found `a`
[INFO] [stderr]   --> src/expr.rs:31:37
[INFO] [stderr]    |
[INFO] [stderr] 31 |             Expr::Add(box Expr::Val a, box b) if a == 0.0   => b,
[INFO] [stderr]    |                                     ^ expected one of `)`, `,`, or `::` here
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, or `::`, found `a`
[INFO] [stderr]   --> src/expr.rs:32:44
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Expr::Add(box b, box Expr::Val a) if a == 0.0   => b,
[INFO] [stderr]    |                                            ^ expected one of `)`, `,`, or `::` here
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, or `::`, found `a`
[INFO] [stderr]   --> src/expr.rs:35:37
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Expr::Mul(box Expr::Val a, _)     if a == 0.0   => Expr::Val(0.0),
[INFO] [stderr]    |                                     ^ expected one of `)`, `,`, or `::` here
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, or `::`, found `a`
[INFO] [stderr]   --> src/expr.rs:37:37
[INFO] [stderr]    |
[INFO] [stderr] 37 |             Expr::Mul(box Expr::Val a, box b) if a == 1.0   => b,
[INFO] [stderr]    |                                     ^ expected one of `)`, `,`, or `::` here
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, or `::`, found `a`
[INFO] [stderr]   --> src/expr.rs:38:44
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Expr::Mul(box b, box Expr::Val a) if a == 1.0   => b,
[INFO] [stderr]    |                                            ^ expected one of `)`, `,`, or `::` here
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected unit struct/variant or constant, found tuple variant `Expr::Val`
[INFO] [stderr]   --> src/expr.rs:31:27
[INFO] [stderr]    |
[INFO] [stderr] 31 |             Expr::Add(box Expr::Val a, box b) if a == 0.0   => b,
[INFO] [stderr]    |                           ^^^^^^^^^ not a unit struct/variant or constant
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected unit struct/variant or constant, found tuple variant `Expr::Val`
[INFO] [stderr]   --> src/expr.rs:32:34
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Expr::Add(box b, box Expr::Val a) if a == 0.0   => b,
[INFO] [stderr]    |                                  ^^^^^^^^^ not a unit struct/variant or constant
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected unit struct/variant or constant, found tuple variant `Expr::Val`
[INFO] [stderr]   --> src/expr.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Expr::Mul(box Expr::Val a, _)     if a == 0.0   => Expr::Val(0.0),
[INFO] [stderr]    |                           ^^^^^^^^^ not a unit struct/variant or constant
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected unit struct/variant or constant, found tuple variant `Expr::Val`
[INFO] [stderr]   --> src/expr.rs:36:30
[INFO] [stderr]    |
[INFO] [stderr] 36 |             Expr::Mul(_, box Expr::Val)       if a == 0.0   => Expr::Val(0.0),
[INFO] [stderr]    |                              ^^^^^^^^^ not a unit struct/variant or constant
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `a` in this scope
[INFO] [stderr]   --> src/expr.rs:36:50
[INFO] [stderr]    |
[INFO] [stderr] 36 |             Expr::Mul(_, box Expr::Val)       if a == 0.0   => Expr::Val(0.0),
[INFO] [stderr]    |                                                  ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected unit struct/variant or constant, found tuple variant `Expr::Val`
[INFO] [stderr]   --> src/expr.rs:37:27
[INFO] [stderr]    |
[INFO] [stderr] 37 |             Expr::Mul(box Expr::Val a, box b) if a == 1.0   => b,
[INFO] [stderr]    |                           ^^^^^^^^^ not a unit struct/variant or constant
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected unit struct/variant or constant, found tuple variant `Expr::Val`
[INFO] [stderr]   --> src/expr.rs:38:34
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Expr::Mul(box b, box Expr::Val a) if a == 1.0   => b,
[INFO] [stderr]    |                                  ^^^^^^^^^ not a unit struct/variant or constant
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax, box_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 2 fields
[INFO] [stderr]   --> src/expr.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             Expr::Add(box Expr::Val a, box b) if a == 0.0   => b,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 fields, found 3
[INFO] [stderr] 
[INFO] [stderr] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 2 fields
[INFO] [stderr]   --> src/expr.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Expr::Add(box b, box Expr::Val a) if a == 0.0   => b,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 fields, found 3
[INFO] [stderr] 
[INFO] [stderr] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 2 fields
[INFO] [stderr]   --> src/expr.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Expr::Mul(box Expr::Val a, _)     if a == 0.0   => Expr::Val(0.0),
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 fields, found 3
[INFO] [stderr] 
[INFO] [stderr] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 2 fields
[INFO] [stderr]   --> src/expr.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             Expr::Mul(box Expr::Val a, box b) if a == 1.0   => b,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 fields, found 3
[INFO] [stderr] 
[INFO] [stderr] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 2 fields
[INFO] [stderr]   --> src/expr.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Expr::Mul(box b, box Expr::Val a) if a == 1.0   => b,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 fields, found 3
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0023, E0425, E0532, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0023`.
[INFO] [stderr] error: Could not compile `nc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e96f3111d87cb516e33463aac47525c12b3ed1302a59e2e42146db9bb2a9b25b"`
[INFO] running `"docker" "rm" "-f" "e96f3111d87cb516e33463aac47525c12b3ed1302a59e2e42146db9bb2a9b25b"`
[INFO] [stdout] e96f3111d87cb516e33463aac47525c12b3ed1302a59e2e42146db9bb2a9b25b