[INFO] fetching crate httptest_server 0.1.0...
[INFO] checking httptest_server-0.1.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate httptest_server 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate httptest_server 0.1.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate httptest_server 0.1.0
[INFO] finished tweaking crates.io crate httptest_server 0.1.0
[INFO] tweaked toml for crates.io crate httptest_server 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded httptest_core v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0094075fd998f162ab7205ac6c3d6cc1895f91f124ebf9a6bf170c6d2fa4ad62
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0094075fd998f162ab7205ac6c3d6cc1895f91f124ebf9a6bf170c6d2fa4ad62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0094075fd998f162ab7205ac6c3d6cc1895f91f124ebf9a6bf170c6d2fa4ad62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0094075fd998f162ab7205ac6c3d6cc1895f91f124ebf9a6bf170c6d2fa4ad62", kill_on_drop: false }`
[INFO] [stdout] 0094075fd998f162ab7205ac6c3d6cc1895f91f124ebf9a6bf170c6d2fa4ad62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a67c7188e07caeb837c2d300757fd7c05b14a53cdbae1102d984c86985e30dd7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a67c7188e07caeb837c2d300757fd7c05b14a53cdbae1102d984c86985e30dd7", kill_on_drop: false }`
[INFO] [stderr]     Checking httptest_core v0.1.1
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking httptest_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `trigger_shutdown`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     trigger_shutdown: Option<futures::channel::oneshot::Sender<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:138:24
[INFO] [stdout]     |
[INFO] [stdout] 138 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 139 | |                     "Unexpected number of requests for matcher '{:?}'; received {}; expected {:?}",
[INFO] [stdout] 140 | |                     &expectation.matcher, expectation.hit_count, &expectation.cardinality,
[INFO] [stdout] 141 | |                 ));
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 panic!(
[INFO] [stdout] 139 |                     "Unexpected number of requests for matcher '{:?}'; received {}; expected {:?}",
[INFO] [stdout] 140 |                     &expectation.matcher, expectation.hit_count, &expectation.cardinality,
[INFO] [stdout] 141 |                 );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `trigger_shutdown`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     trigger_shutdown: Option<futures::channel::oneshot::Sender<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:138:24
[INFO] [stdout]     |
[INFO] [stdout] 138 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 139 | |                     "Unexpected number of requests for matcher '{:?}'; received {}; expected {:?}",
[INFO] [stdout] 140 | |                     &expectation.matcher, expectation.hit_count, &expectation.cardinality,
[INFO] [stdout] 141 | |                 ));
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 panic!(
[INFO] [stdout] 139 |                     "Unexpected number of requests for matcher '{:?}'; received {}; expected {:?}",
[INFO] [stdout] 140 |                     &expectation.matcher, expectation.hit_count, &expectation.cardinality,
[INFO] [stdout] 141 |                 );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.94s
[INFO] running `Command { std: "docker" "inspect" "a67c7188e07caeb837c2d300757fd7c05b14a53cdbae1102d984c86985e30dd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a67c7188e07caeb837c2d300757fd7c05b14a53cdbae1102d984c86985e30dd7", kill_on_drop: false }`
[INFO] [stdout] a67c7188e07caeb837c2d300757fd7c05b14a53cdbae1102d984c86985e30dd7