[INFO] fetching crate rust_demos 0.1.0... [INFO] checking rust_demos-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] extracting crate rust_demos 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate rust_demos 0.1.0 [INFO] finished tweaking crates.io crate rust_demos 0.1.0 [INFO] tweaked toml for crates.io crate rust_demos 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate rust_demos 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate rust_demos 0.1.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4355034c9ef39d2e098c4b784a438ee836011ac1bbb7807aa93eeaf32f4df97f [INFO] running `Command { std: "docker" "start" "-a" "4355034c9ef39d2e098c4b784a438ee836011ac1bbb7807aa93eeaf32f4df97f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4355034c9ef39d2e098c4b784a438ee836011ac1bbb7807aa93eeaf32f4df97f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4355034c9ef39d2e098c4b784a438ee836011ac1bbb7807aa93eeaf32f4df97f", kill_on_drop: false }` [INFO] [stdout] 4355034c9ef39d2e098c4b784a438ee836011ac1bbb7807aa93eeaf32f4df97f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3aba5e99cdf93fed0cde5b999ffde7c1698313ee838b0dd9c7eb94b97a5f076c [INFO] running `Command { std: "docker" "start" "-a" "3aba5e99cdf93fed0cde5b999ffde7c1698313ee838b0dd9c7eb94b97a5f076c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.172 [INFO] [stderr] Compiling autocfg v1.4.0 [INFO] [stderr] Compiling parking_lot_core v0.9.10 [INFO] [stderr] Checking smallvec v1.15.0 [INFO] [stderr] Checking minimal-lexical v0.2.1 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Compiling syn v2.0.100 [INFO] [stderr] Checking nom v7.1.3 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Checking socket2 v0.5.9 [INFO] [stderr] Checking mio v1.0.3 [INFO] [stderr] Checking signal-hook-registry v1.4.2 [INFO] [stderr] Checking parking_lot v0.12.3 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling tokio-macros v2.5.0 [INFO] [stderr] Checking tokio v1.44.2 [INFO] [stderr] Checking serde v1.0.219 [INFO] [stderr] Checking serde_json v1.0.140 [INFO] [stderr] Checking rust_demos v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/sample.rs:46:19 [INFO] [stdout] | [INFO] [stdout] 46 | fn display_strlen(mut s:String)->(String,usize){ [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/iterators.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | let mut score_iter=scores.iter().clone(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `must_use` that must be used [INFO] [stdout] --> src/bin/struct.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | format!{"Name is {} age is {} got {} marks",self.name,self.age,self.marks}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `empid` is never read [INFO] [stdout] --> src/bin/empl_struct.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Emp{ [INFO] [stdout] | --- field in this struct [INFO] [stdout] 3 | empid:i16, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Emp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/lifetime.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | let a:u8 = 25; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `empid` is never read [INFO] [stdout] --> src/bin/empl_struct.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Emp{ [INFO] [stdout] | --- field in this struct [INFO] [stdout] 3 | empid:i16, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Emp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p` [INFO] [stdout] --> src/bin/lifetime.rs:5:6 [INFO] [stdout] | [INFO] [stdout] 5 | let p:&u8; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_p` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/bin/lifetime.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | let b:u8 = 50; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/unique.rs:6:6 [INFO] [stdout] | [INFO] [stdout] 6 | let mut word=input.trim().replace("\t","").replace(" ",""); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `error` [INFO] [stdout] --> src/bin/reading.rs:7:21 [INFO] [stdout] | [INFO] [stdout] 7 | unwrap_or_else(|error|{ [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_username` is never used [INFO] [stdout] --> src/bin/slice_input.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn get_username(mail:&String)->&str{ [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prime` [INFO] [stdout] --> src/bin/error.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | let prime=match is_prime(n){ [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_prime` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `must_use` that must be used [INFO] [stdout] --> src/bin/struct.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | format!{"Name is {} age is {} got {} marks",self.name,self.age,self.marks}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/unique.rs:6:6 [INFO] [stdout] | [INFO] [stdout] 6 | let mut word=input.trim().replace("\t","").replace(" ",""); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `example` is assigned to, but never used [INFO] [stdout] --> src/bin/basics.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let mut example; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_example` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `example` is never read [INFO] [stdout] --> src/bin/basics.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | example=10; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/basics.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let mut example; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prime` [INFO] [stdout] --> src/bin/error.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | let prime=match is_prime(n){ [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_prime` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `error` [INFO] [stdout] --> src/bin/reading.rs:7:21 [INFO] [stdout] | [INFO] [stdout] 7 | unwrap_or_else(|error|{ [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/lifetime.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | let a:u8 = 25; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p` [INFO] [stdout] --> src/bin/lifetime.rs:5:6 [INFO] [stdout] | [INFO] [stdout] 5 | let p:&u8; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_p` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/bin/lifetime.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | let b:u8 = 50; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `example` is assigned to, but never used [INFO] [stdout] --> src/bin/basics.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let mut example; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_example` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `example` is never read [INFO] [stdout] --> src/bin/basics.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | example=10; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/basics.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let mut example; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_username` is never used [INFO] [stdout] --> src/bin/slice_input.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn get_username(mail:&String)->&str{ [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/iterators.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | let mut score_iter=scores.iter().clone(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/sample.rs:46:19 [INFO] [stdout] | [INFO] [stdout] 46 | fn display_strlen(mut s:String)->(String,usize){ [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.55s [INFO] running `Command { std: "docker" "inspect" "3aba5e99cdf93fed0cde5b999ffde7c1698313ee838b0dd9c7eb94b97a5f076c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3aba5e99cdf93fed0cde5b999ffde7c1698313ee838b0dd9c7eb94b97a5f076c", kill_on_drop: false }` [INFO] [stdout] 3aba5e99cdf93fed0cde5b999ffde7c1698313ee838b0dd9c7eb94b97a5f076c