[INFO] cloning repository https://github.com/Kazuhiro-Mimaki/rust-basic-handson [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kazuhiro-Mimaki/rust-basic-handson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKazuhiro-Mimaki%2Frust-basic-handson", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKazuhiro-Mimaki%2Frust-basic-handson'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d0d4fd461460e6dcaeaacf30d61211a21651bbed [INFO] checking Kazuhiro-Mimaki/rust-basic-handson against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKazuhiro-Mimaki%2Frust-basic-handson" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Kazuhiro-Mimaki/rust-basic-handson [INFO] finished tweaking git repo https://github.com/Kazuhiro-Mimaki/rust-basic-handson [INFO] tweaked toml for git repo https://github.com/Kazuhiro-Mimaki/rust-basic-handson written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Kazuhiro-Mimaki/rust-basic-handson on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Kazuhiro-Mimaki/rust-basic-handson 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] | [INFO] [stderr] = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0a59f490ca7f0dd10c09ea02e68f33cbef6535422b3d05cee2e46b79f3bacc05 [INFO] running `Command { std: "docker" "start" "-a" "0a59f490ca7f0dd10c09ea02e68f33cbef6535422b3d05cee2e46b79f3bacc05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0a59f490ca7f0dd10c09ea02e68f33cbef6535422b3d05cee2e46b79f3bacc05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0a59f490ca7f0dd10c09ea02e68f33cbef6535422b3d05cee2e46b79f3bacc05", kill_on_drop: false }` [INFO] [stdout] 0a59f490ca7f0dd10c09ea02e68f33cbef6535422b3d05cee2e46b79f3bacc05 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c43038d39e9c68533b3e0f890c1e00117c9b7e5c6ce08c5294031024a922a3cc [INFO] running `Command { std: "docker" "start" "-a" "c43038d39e9c68533b3e0f890c1e00117c9b7e5c6ce08c5294031024a922a3cc", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] | [INFO] [stderr] = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] Compiling syn v1.0.90 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Compiling unicode-segmentation v1.9.0 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Checking explain_move v0.1.0 (/opt/rustwide/workdir/explain_move) [INFO] [stderr] Checking cat_1 v0.1.0 (/opt/rustwide/workdir/cat_1) [INFO] [stderr] Checking grep_2 v0.1.0 (/opt/rustwide/workdir/grep_2) [INFO] [stderr] Checking cat_2 v0.1.0 (/opt/rustwide/workdir/cat_2) [INFO] [stderr] Checking grep_1 v0.1.0 (/opt/rustwide/workdir/grep_1) [INFO] [stderr] Compiling quote v1.0.17 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking rayon-core v1.9.1 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Checking structopt v0.3.26 [INFO] [stderr] Checking grep_3 v0.1.0 (/opt/rustwide/workdir/grep_3) [INFO] [stderr] Checking grep_5 v0.1.0 (/opt/rustwide/workdir/grep_5) [INFO] [stderr] Checking grep_6 v0.1.0 (/opt/rustwide/workdir/grep_6) [INFO] [stderr] Checking grep_4 v0.1.0 (/opt/rustwide/workdir/grep_4) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_3/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 8 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_3/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | / #[structopt(name = "PATTERN2")] [INFO] [stdout] 10 | | path: String, [INFO] [stdout] | |________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `grep_3` (bin "grep_3") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_5/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 8 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_5/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | / #[structopt(name = "FILE")] [INFO] [stdout] 10 | | path: Vec, [INFO] [stdout] | |_____________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_5/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 8 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_5/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | / #[structopt(name = "FILE")] [INFO] [stdout] 10 | | path: Vec, [INFO] [stdout] | |_____________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_6/src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 9 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_6/src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | / #[structopt(name = "FILE")] [INFO] [stdout] 11 | | path: Vec, [INFO] [stdout] | |_____________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_4/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 8 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_4/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | / #[structopt(name = "FILE")] [INFO] [stdout] 10 | | path: Vec, [INFO] [stdout] | |_____________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `grep_5` (bin "grep_5") due to 2 previous errors [INFO] [stderr] error: could not compile `grep_5` (bin "grep_5" test) due to 2 previous errors [INFO] [stderr] error: could not compile `grep_6` (bin "grep_6" test) due to 2 previous errors [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_3/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 8 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_3/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | / #[structopt(name = "PATTERN2")] [INFO] [stdout] 10 | | path: String, [INFO] [stdout] | |________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_4/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 8 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_4/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | / #[structopt(name = "FILE")] [INFO] [stdout] 10 | | path: Vec, [INFO] [stdout] | |_____________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `grep_3` (bin "grep_3" test) due to 2 previous errors [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_6/src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | / #[structopt(name = "PATTERN")] [INFO] [stdout] 9 | | pattern: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> grep_6/src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | / #[structopt(name = "FILE")] [INFO] [stdout] 11 | | path: Vec, [INFO] [stdout] | |_____________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `grep_6` (bin "grep_6") due to 2 previous errors [INFO] [stderr] error: could not compile `grep_4` (bin "grep_4") due to 2 previous errors [INFO] [stderr] error: could not compile `grep_4` (bin "grep_4" test) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "c43038d39e9c68533b3e0f890c1e00117c9b7e5c6ce08c5294031024a922a3cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c43038d39e9c68533b3e0f890c1e00117c9b7e5c6ce08c5294031024a922a3cc", kill_on_drop: false }` [INFO] [stdout] c43038d39e9c68533b3e0f890c1e00117c9b7e5c6ce08c5294031024a922a3cc