[INFO] crate rust-http-server 0.0.1 is already in cache
[INFO] extracting crate rust-http-server 0.0.1 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/rust-http-server/0.0.1
[INFO] extracting crate rust-http-server 0.0.1 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/rust-http-server/0.0.1
[INFO] validating manifest of rust-http-server-0.0.1 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust-http-server-0.0.1 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust-http-server-0.0.1
[INFO] finished frobbing rust-http-server-0.0.1
[INFO] frobbed toml for rust-http-server-0.0.1 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/rust-http-server/0.0.1/Cargo.toml
[INFO] started frobbing rust-http-server-0.0.1
[INFO] finished frobbing rust-http-server-0.0.1
[INFO] frobbed toml for rust-http-server-0.0.1 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/rust-http-server/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rust-http-server-0.0.1 against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-4/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/rust-http-server/0.0.1:/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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c878ce8739ef1e56658004b43170ee0beb7fa4a1606b0c2cdafff18c61292ee2
[INFO] running `"docker" "start" "-a" "c878ce8739ef1e56658004b43170ee0beb7fa4a1606b0c2cdafff18c61292ee2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cpython v0.1.0
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]    Compiling python3-sys v0.1.3
[INFO] [stderr]     Checking rust-http-server v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server.rs:77:64
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub struct InternalServerError(pub String, pub Option<&'static Error>);
[INFO] [stderr]    |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/threadpool.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 | type Job = Box<FnBox + Send + 'static>;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/threadpool.rs:29:55
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub type Executor<F: FnOnce() + Send + 'static> = Box<Fn(F) -> () + Send + 'static>;
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F) -> () + Send + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/threadpool.rs:29:22
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub type Executor<F: FnOnce() + Send + 'static> = Box<Fn(F) -> () + Send + 'static>;
[INFO] [stderr]    |                      ^^^^^^^^   ^^^^   ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server.rs:77:64
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub struct InternalServerError(pub String, pub Option<&'static Error>);
[INFO] [stderr]    |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/threadpool.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 | type Job = Box<FnBox + Send + 'static>;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/threadpool.rs:29:55
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub type Executor<F: FnOnce() + Send + 'static> = Box<Fn(F) -> () + Send + 'static>;
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F) -> () + Send + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/threadpool.rs:29:22
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub type Executor<F: FnOnce() + Send + 'static> = Box<Fn(F) -> () + Send + 'static>;
[INFO] [stderr]    |                      ^^^^^^^^   ^^^^   ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/threadpool.rs:151:37
[INFO] [stderr]     |
[INFO] [stderr] 151 |             pool.execute( move || { 2+2; } );
[INFO] [stderr]     |                                     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.69s
[INFO] running `"docker" "inspect" "c878ce8739ef1e56658004b43170ee0beb7fa4a1606b0c2cdafff18c61292ee2"`
[INFO] running `"docker" "rm" "-f" "c878ce8739ef1e56658004b43170ee0beb7fa4a1606b0c2cdafff18c61292ee2"`
[INFO] [stdout] c878ce8739ef1e56658004b43170ee0beb7fa4a1606b0c2cdafff18c61292ee2