[INFO] cloning repository toyboot4e/loxrs
[INFO] running `"git" "clone" "--bare" "git://github.com/toyboot4e/loxrs.git" "work/cache/sources/gh/toyboot4e/loxrs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/toyboot4e/loxrs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/toyboot4e/loxrs" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/toyboot4e/loxrs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/toyboot4e/loxrs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/toyboot4e/loxrs" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/toyboot4e/loxrs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/toyboot4e/loxrs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e2fbfe91fa0ded9d7b48a4d790eaa0192f7dc869
[INFO] sha for GitHub repo toyboot4e/loxrs: e2fbfe91fa0ded9d7b48a4d790eaa0192f7dc869
[INFO] validating manifest of toyboot4e/loxrs on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of toyboot4e/loxrs on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing toyboot4e/loxrs
[INFO] finished frobbing toyboot4e/loxrs
[INFO] frobbed toml for toyboot4e/loxrs written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/toyboot4e/loxrs/Cargo.toml
[INFO] started frobbing toyboot4e/loxrs
[INFO] finished frobbing toyboot4e/loxrs
[INFO] frobbed toml for toyboot4e/loxrs written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/toyboot4e/loxrs/Cargo.toml
[INFO] crate toyboot4e/loxrs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking toyboot4e/loxrs against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/toyboot4e/loxrs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c62ab9807f2eeb45fd83d976da97f87363c176ef6a1b524650b291788194b560
[INFO] running `"docker" "start" "-a" "c62ab9807f2eeb45fd83d976da97f87363c176ef6a1b524650b291788194b560"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking loxrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `ExprVisitor`
[INFO] [stderr]  --> src/interpreter/interpreter.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::visitor::{ExprVisitor, StmtVisitor};
[INFO] [stderr]   |                      ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::obj::LoxObj`
[INFO] [stderr]  --> src/interpreter/visitor.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::obj::LoxObj;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PeekingNext`
[INFO] [stderr]  --> src/walk/scanner.rs:1:41
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ::itertools::{multipeek, MultiPeek, PeekingNext};
[INFO] [stderr]   |                                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExprVisitor`
[INFO] [stderr]  --> src/interpreter/interpreter.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::visitor::{ExprVisitor, StmtVisitor};
[INFO] [stderr]   |                      ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::obj::LoxObj`
[INFO] [stderr]  --> src/interpreter/visitor.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::obj::LoxObj;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PeekingNext`
[INFO] [stderr]  --> src/walk/scanner.rs:1:41
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ::itertools::{multipeek, MultiPeek, PeekingNext};
[INFO] [stderr]   |                                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable if-let pattern
[INFO] [stderr]   --> src/interpreter/interpreter.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     if let LoxObj::Value(lit) = obj {
[INFO] [stderr] 34 | |         use LiteralArgs::*;
[INFO] [stderr] 35 | |         return match lit {
[INFO] [stderr] 36 | |             Nil => "<nil>".to_string(),
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |         return "ERROR".to_string();
[INFO] [stderr] 44 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(irrefutable_let_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |             _ => return false,
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             _ => None,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             _ => false,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             _ => None,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable if-let pattern
[INFO] [stderr]   --> src/interpreter/interpreter.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     if let LoxObj::Value(lit) = obj {
[INFO] [stderr] 34 | |         use LiteralArgs::*;
[INFO] [stderr] 35 | |         return match lit {
[INFO] [stderr] 36 | |             Nil => "<nil>".to_string(),
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |         return "ERROR".to_string();
[INFO] [stderr] 44 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(irrefutable_let_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |             _ => return false,
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             _ => None,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             _ => false,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/interpreter/obj.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             _ => None,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "c62ab9807f2eeb45fd83d976da97f87363c176ef6a1b524650b291788194b560"`
[INFO] running `"docker" "rm" "-f" "c62ab9807f2eeb45fd83d976da97f87363c176ef6a1b524650b291788194b560"`
[INFO] [stdout] c62ab9807f2eeb45fd83d976da97f87363c176ef6a1b524650b291788194b560