[INFO] cloning repository https://github.com/jianantian/kvs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jianantian/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianantian%2Fkvs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianantian%2Fkvs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1d3b14dced9bb45de62eb96938c114e25aaeb78e [INFO] checking jianantian/kvs against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianantian%2Fkvs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jianantian/kvs 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/jianantian/kvs [INFO] finished tweaking git repo https://github.com/jianantian/kvs [INFO] tweaked toml for git repo https://github.com/jianantian/kvs written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jianantian/kvs 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 num-traits v0.2.9 [INFO] [stderr] Downloaded syn v1.0.8 [INFO] [stderr] Downloaded serde_derive v1.0.102 [INFO] [stderr] Downloaded serde v1.0.102 [INFO] [stderr] Downloaded serde_json v1.0.41 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7049993d1f09351baa4e142c8bd58fb1d992d4f79d56a052fb38b7c292582059 [INFO] running `Command { std: "docker" "start" "-a" "7049993d1f09351baa4e142c8bd58fb1d992d4f79d56a052fb38b7c292582059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7049993d1f09351baa4e142c8bd58fb1d992d4f79d56a052fb38b7c292582059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7049993d1f09351baa4e142c8bd58fb1d992d4f79d56a052fb38b7c292582059", kill_on_drop: false }` [INFO] [stdout] 7049993d1f09351baa4e142c8bd58fb1d992d4f79d56a052fb38b7c292582059 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5d359059c5bb48db337e8d3c9d27ed535026806b3d236d62fbda9f4bc7699552 [INFO] running `Command { std: "docker" "start" "-a" "5d359059c5bb48db337e8d3c9d27ed535026806b3d236d62fbda9f4bc7699552", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling serde v1.0.102 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Compiling num-traits v0.2.9 [INFO] [stderr] Checking same-file v1.0.5 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking walkdir v2.2.9 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking clap v2.33.0 [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 float-cmp v0.4.0 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Compiling serde_derive v1.0.102 [INFO] [stderr] Checking serde_json v1.0.41 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Serializer` [INFO] [stdout] --> src/kv.rs:3:32 [INFO] [stdout] | [INFO] [stdout] 3 | use serde_json::{Deserializer, Serializer}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `new_writer` is never used [INFO] [stdout] --> src/kv.rs:245:4 [INFO] [stdout] | [INFO] [stdout] 245 | fn new_writer(fname: &Path, pos: u64) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] warning: unused import: `Serializer` [INFO] [stdout] --> src/kv.rs:3:32 [INFO] [stdout] | [INFO] [stdout] 3 | use serde_json::{Deserializer, Serializer}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `new_writer` is never used [INFO] [stdout] --> src/kv.rs:245:4 [INFO] [stdout] | [INFO] [stdout] 245 | fn new_writer(fname: &Path, pos: u64) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.52s [INFO] running `Command { std: "docker" "inspect" "5d359059c5bb48db337e8d3c9d27ed535026806b3d236d62fbda9f4bc7699552", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5d359059c5bb48db337e8d3c9d27ed535026806b3d236d62fbda9f4bc7699552", kill_on_drop: false }` [INFO] [stdout] 5d359059c5bb48db337e8d3c9d27ed535026806b3d236d62fbda9f4bc7699552 [INFO] checking jianantian/kvs against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianantian%2Fkvs" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jianantian/kvs on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jianantian/kvs [INFO] finished tweaking git repo https://github.com/jianantian/kvs [INFO] tweaked toml for git repo https://github.com/jianantian/kvs written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jianantian/kvs 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cfc2ef5379eaab98da920f0efe694c219e3714d926b1fc9a817685907f9874af [INFO] running `Command { std: "docker" "start" "-a" "cfc2ef5379eaab98da920f0efe694c219e3714d926b1fc9a817685907f9874af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cfc2ef5379eaab98da920f0efe694c219e3714d926b1fc9a817685907f9874af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cfc2ef5379eaab98da920f0efe694c219e3714d926b1fc9a817685907f9874af", kill_on_drop: false }` [INFO] [stdout] cfc2ef5379eaab98da920f0efe694c219e3714d926b1fc9a817685907f9874af [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b6ae0612d780e62a745d1c9812b78bb19594ae9b8809afac859b4ff610607a40 [INFO] running `Command { std: "docker" "start" "-a" "b6ae0612d780e62a745d1c9812b78bb19594ae9b8809afac859b4ff610607a40", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling serde v1.0.102 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling num-traits v0.2.9 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking same-file v1.0.5 [INFO] [stderr] Checking walkdir v2.2.9 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking clap v2.33.0 [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 float-cmp v0.4.0 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Compiling serde_derive v1.0.102 [INFO] [stderr] Checking serde_json v1.0.41 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Serializer` [INFO] [stdout] --> src/kv.rs:3:32 [INFO] [stdout] | [INFO] [stdout] 3 | use serde_json::{Deserializer, Serializer}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `new_writer` is never used [INFO] [stdout] --> src/kv.rs:245:4 [INFO] [stdout] | [INFO] [stdout] 245 | fn new_writer(fname: &Path, pos: u64) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] warning: unused import: `Serializer` [INFO] [stdout] --> src/kv.rs:3:32 [INFO] [stdout] | [INFO] [stdout] 3 | use serde_json::{Deserializer, Serializer}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `new_writer` is never used [INFO] [stdout] --> src/kv.rs:245:4 [INFO] [stdout] | [INFO] [stdout] 245 | fn new_writer(fname: &Path, pos: u64) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.49s [INFO] running `Command { std: "docker" "inspect" "b6ae0612d780e62a745d1c9812b78bb19594ae9b8809afac859b4ff610607a40", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6ae0612d780e62a745d1c9812b78bb19594ae9b8809afac859b4ff610607a40", kill_on_drop: false }` [INFO] [stdout] b6ae0612d780e62a745d1c9812b78bb19594ae9b8809afac859b4ff610607a40