[INFO] fetching crate wordtop 0.1.6... [INFO] checking wordtop-0.1.6 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate wordtop 0.1.6 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate wordtop 0.1.6 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 crates.io crate wordtop 0.1.6 [INFO] finished tweaking crates.io crate wordtop 0.1.6 [INFO] tweaked toml for crates.io crate wordtop 0.1.6 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate wordtop 0.1.6 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 ctrlc v3.2.1 [INFO] [stderr] Downloaded nix v0.23.0 [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] 43ac772334846af44d2924b5b1c79b9143541cfde8962e83cc75dd6aa16b870c [INFO] running `Command { std: "docker" "start" "-a" "43ac772334846af44d2924b5b1c79b9143541cfde8962e83cc75dd6aa16b870c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "43ac772334846af44d2924b5b1c79b9143541cfde8962e83cc75dd6aa16b870c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43ac772334846af44d2924b5b1c79b9143541cfde8962e83cc75dd6aa16b870c", kill_on_drop: false }` [INFO] [stdout] 43ac772334846af44d2924b5b1c79b9143541cfde8962e83cc75dd6aa16b870c [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] 97105b910e082dfdc471bbfecba8deda1be3b7ec6a453f3c3cf0dda59a1817e0 [INFO] running `Command { std: "docker" "start" "-a" "97105b910e082dfdc471bbfecba8deda1be3b7ec6a453f3c3cf0dda59a1817e0", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking nix v0.23.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking ctrlc v3.2.1 [INFO] [stderr] Checking wordtop v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `HashMap` is imported redundantly [INFO] [stdout] --> src/calculate.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 48 | use super::*; [INFO] [stdout] | -------- the item `HashMap` is already imported here [INFO] [stdout] 49 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | let mut sorted_vec = Vec::new(); [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: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:103:17 [INFO] [stdout] | [INFO] [stdout] 103 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/print.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | count = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/print.rs:76:18 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/print.rs:76:25 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/print.rs:76:14 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [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/print.rs:76:21 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | let mut sorted_vec = Vec::new(); [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: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:103:17 [INFO] [stdout] | [INFO] [stdout] 103 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/print.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | count = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.20s [INFO] running `Command { std: "docker" "inspect" "97105b910e082dfdc471bbfecba8deda1be3b7ec6a453f3c3cf0dda59a1817e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97105b910e082dfdc471bbfecba8deda1be3b7ec6a453f3c3cf0dda59a1817e0", kill_on_drop: false }` [INFO] [stdout] 97105b910e082dfdc471bbfecba8deda1be3b7ec6a453f3c3cf0dda59a1817e0 [INFO] checking wordtop-0.1.6 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate wordtop 0.1.6 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate wordtop 0.1.6 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 crates.io crate wordtop 0.1.6 [INFO] finished tweaking crates.io crate wordtop 0.1.6 [INFO] tweaked toml for crates.io crate wordtop 0.1.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate wordtop 0.1.6 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] 72415f9284b4a0a1f41f24cc86e0fd06cb32ec6ea0111e9abf37d392e28b2cd1 [INFO] running `Command { std: "docker" "start" "-a" "72415f9284b4a0a1f41f24cc86e0fd06cb32ec6ea0111e9abf37d392e28b2cd1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "72415f9284b4a0a1f41f24cc86e0fd06cb32ec6ea0111e9abf37d392e28b2cd1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72415f9284b4a0a1f41f24cc86e0fd06cb32ec6ea0111e9abf37d392e28b2cd1", kill_on_drop: false }` [INFO] [stdout] 72415f9284b4a0a1f41f24cc86e0fd06cb32ec6ea0111e9abf37d392e28b2cd1 [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] 8aadc64d6df096f99c70920549dc0288c67f6dac1b91a86fc22054363ddec783 [INFO] running `Command { std: "docker" "start" "-a" "8aadc64d6df096f99c70920549dc0288c67f6dac1b91a86fc22054363ddec783", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking nix v0.23.0 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking ctrlc v3.2.1 [INFO] [stderr] Checking wordtop v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `HashMap` is imported redundantly [INFO] [stdout] --> src/calculate.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 48 | use super::*; [INFO] [stdout] | -------- the item `HashMap` is already imported here [INFO] [stdout] 49 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | let mut sorted_vec = Vec::new(); [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: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:103:17 [INFO] [stdout] | [INFO] [stdout] 103 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/print.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | count = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | let mut sorted_vec = Vec::new(); [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: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:103:17 [INFO] [stdout] | [INFO] [stdout] 103 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/print.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | count = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/print.rs:76:18 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/print.rs:76:25 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/print.rs:76:14 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [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/print.rs:76:21 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.35s [INFO] running `Command { std: "docker" "inspect" "8aadc64d6df096f99c70920549dc0288c67f6dac1b91a86fc22054363ddec783", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8aadc64d6df096f99c70920549dc0288c67f6dac1b91a86fc22054363ddec783", kill_on_drop: false }` [INFO] [stdout] 8aadc64d6df096f99c70920549dc0288c67f6dac1b91a86fc22054363ddec783