[INFO] cloning repository https://github.com/ChristianVisintin/studying-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChristianVisintin/studying-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a8d4bf2d168261af97fe4368bfdf641e413a60f5 [INFO] checking ChristianVisintin/studying-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ChristianVisintin/studying-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ChristianVisintin/studying-rust [INFO] finished tweaking git repo https://github.com/ChristianVisintin/studying-rust [INFO] tweaked toml for git repo https://github.com/ChristianVisintin/studying-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ChristianVisintin/studying-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded getrandom v0.1.12 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 83e56477ba1a20d500d2aeae17f7a8c21b94c7e386343cc8f01248c67260f31b [INFO] running `Command { std: "docker" "start" "-a" "83e56477ba1a20d500d2aeae17f7a8c21b94c7e386343cc8f01248c67260f31b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "83e56477ba1a20d500d2aeae17f7a8c21b94c7e386343cc8f01248c67260f31b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83e56477ba1a20d500d2aeae17f7a8c21b94c7e386343cc8f01248c67260f31b", kill_on_drop: false }` [INFO] [stdout] 83e56477ba1a20d500d2aeae17f7a8c21b94c7e386343cc8f01248c67260f31b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2473638a70efae5088195997df542de7629eb9ce679148504c9e5fce2f914859 [INFO] running `Command { std: "docker" "start" "-a" "2473638a70efae5088195997df542de7629eb9ce679148504c9e5fce2f914859", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Checking regex-syntax v0.6.12 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Checking myfirstmodule v0.1.0 (/opt/rustwide/workdir/myfirstmodule) [INFO] [stderr] Checking tests v0.1.0 (/opt/rustwide/workdir/tests) [INFO] [stderr] Checking generics v0.1.0 (/opt/rustwide/workdir/generics) [INFO] [stderr] Checking collections v0.1.0 (/opt/rustwide/workdir/collections) [INFO] [stderr] Checking hello-rust v0.1.0 (/opt/rustwide/workdir/hello-rust) [INFO] [stderr] Checking ownership v0.1.0 (/opt/rustwide/workdir/ownership) [INFO] [stderr] Checking errors v0.1.0 (/opt/rustwide/workdir/errors) [INFO] [stderr] Checking multi-threading v0.1.0 (/opt/rustwide/workdir/multi-threading) [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking structs v0.1.0 (/opt/rustwide/workdir/structs) [INFO] [stderr] Checking control-flow v0.1.0 (/opt/rustwide/workdir/control-flow) [INFO] [stdout] warning: unused import: `tests::utils` [INFO] [stdout] --> tests/tests/integration_test.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use tests::utils; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking datatypes v0.1.0 (/opt/rustwide/workdir/datatypes) [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Checking functionalfeatures v0.1.0 (/opt/rustwide/workdir/functionalfeatures) [INFO] [stderr] Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep) [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> minigrep/src/lib.rs:33:24 [INFO] [stdout] | [INFO] [stdout] 33 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 33 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> minigrep/src/lib.rs:50:24 [INFO] [stdout] | [INFO] [stdout] 50 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 50 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> minigrep/src/lib.rs:67:24 [INFO] [stdout] | [INFO] [stdout] 67 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 67 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.86s [INFO] running `Command { std: "docker" "inspect" "2473638a70efae5088195997df542de7629eb9ce679148504c9e5fce2f914859", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2473638a70efae5088195997df542de7629eb9ce679148504c9e5fce2f914859", kill_on_drop: false }` [INFO] [stdout] 2473638a70efae5088195997df542de7629eb9ce679148504c9e5fce2f914859 [INFO] checking ChristianVisintin/studying-rust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ChristianVisintin/studying-rust on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ChristianVisintin/studying-rust [INFO] finished tweaking git repo https://github.com/ChristianVisintin/studying-rust [INFO] tweaked toml for git repo https://github.com/ChristianVisintin/studying-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ChristianVisintin/studying-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a6c6d150ec6afdeb20fe5dae97c98708a311e6e87a649a4c55ba123c22bf9164 [INFO] running `Command { std: "docker" "start" "-a" "a6c6d150ec6afdeb20fe5dae97c98708a311e6e87a649a4c55ba123c22bf9164", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a6c6d150ec6afdeb20fe5dae97c98708a311e6e87a649a4c55ba123c22bf9164", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a6c6d150ec6afdeb20fe5dae97c98708a311e6e87a649a4c55ba123c22bf9164", kill_on_drop: false }` [INFO] [stdout] a6c6d150ec6afdeb20fe5dae97c98708a311e6e87a649a4c55ba123c22bf9164 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 155b2689512015498f5c4e043b874360147d45c68c81ac2c3acdc8b16024b32e [INFO] running `Command { std: "docker" "start" "-a" "155b2689512015498f5c4e043b874360147d45c68c81ac2c3acdc8b16024b32e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Checking regex-syntax v0.6.12 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Checking myfirstmodule v0.1.0 (/opt/rustwide/workdir/myfirstmodule) [INFO] [stderr] Checking tests v0.1.0 (/opt/rustwide/workdir/tests) [INFO] [stderr] Checking ownership v0.1.0 (/opt/rustwide/workdir/ownership) [INFO] [stderr] Checking control-flow v0.1.0 (/opt/rustwide/workdir/control-flow) [INFO] [stderr] Checking structs v0.1.0 (/opt/rustwide/workdir/structs) [INFO] [stderr] Checking collections v0.1.0 (/opt/rustwide/workdir/collections) [INFO] [stderr] Checking errors v0.1.0 (/opt/rustwide/workdir/errors) [INFO] [stderr] Checking hello-rust v0.1.0 (/opt/rustwide/workdir/hello-rust) [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking multi-threading v0.1.0 (/opt/rustwide/workdir/multi-threading) [INFO] [stderr] Checking generics v0.1.0 (/opt/rustwide/workdir/generics) [INFO] [stderr] Checking datatypes v0.1.0 (/opt/rustwide/workdir/datatypes) [INFO] [stdout] warning: unused import: `tests::utils` [INFO] [stdout] --> tests/tests/integration_test.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use tests::utils; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Checking functionalfeatures v0.1.0 (/opt/rustwide/workdir/functionalfeatures) [INFO] [stderr] Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep) [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> minigrep/src/lib.rs:33:24 [INFO] [stdout] | [INFO] [stdout] 33 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 33 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> minigrep/src/lib.rs:50:24 [INFO] [stdout] | [INFO] [stdout] 50 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 50 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> minigrep/src/lib.rs:67:24 [INFO] [stdout] | [INFO] [stdout] 67 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 67 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.02s [INFO] running `Command { std: "docker" "inspect" "155b2689512015498f5c4e043b874360147d45c68c81ac2c3acdc8b16024b32e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "155b2689512015498f5c4e043b874360147d45c68c81ac2c3acdc8b16024b32e", kill_on_drop: false }` [INFO] [stdout] 155b2689512015498f5c4e043b874360147d45c68c81ac2c3acdc8b16024b32e