[INFO] cloning repository https://github.com/kroemeke/wordtop [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kroemeke/wordtop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2cb2dad33f02d9c7b252f99c2672cf113bed455a [INFO] checking kroemeke/wordtop against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kroemeke/wordtop on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kroemeke/wordtop [INFO] finished tweaking git repo https://github.com/kroemeke/wordtop [INFO] tweaked toml for git repo https://github.com/kroemeke/wordtop written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/kroemeke/wordtop 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Locking 1 package [INFO] [stderr] Updating wordtop v0.1.5 (/workspace/builds/worker-3-tc1/source) -> v0.1.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 385e2cb0e0cd27157f480c333ee679ec351acd6d3de99269b76f5166c7200ff8 [INFO] running `Command { std: "docker" "start" "-a" "385e2cb0e0cd27157f480c333ee679ec351acd6d3de99269b76f5166c7200ff8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "385e2cb0e0cd27157f480c333ee679ec351acd6d3de99269b76f5166c7200ff8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "385e2cb0e0cd27157f480c333ee679ec351acd6d3de99269b76f5166c7200ff8", kill_on_drop: false }` [INFO] [stdout] 385e2cb0e0cd27157f480c333ee679ec351acd6d3de99269b76f5166c7200ff8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b0f895815ba957b633789b959191b65f5a03ea3ce5147898e4c14aa8c2bb02c2 [INFO] running `Command { std: "docker" "start" "-a" "b0f895815ba957b633789b959191b65f5a03ea3ce5147898e4c14aa8c2bb02c2", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking ansi_term v0.12.1 [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 `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: 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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.57s [INFO] running `Command { std: "docker" "inspect" "b0f895815ba957b633789b959191b65f5a03ea3ce5147898e4c14aa8c2bb02c2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0f895815ba957b633789b959191b65f5a03ea3ce5147898e4c14aa8c2bb02c2", kill_on_drop: false }` [INFO] [stdout] b0f895815ba957b633789b959191b65f5a03ea3ce5147898e4c14aa8c2bb02c2 [INFO] checking kroemeke/wordtop against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kroemeke/wordtop on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kroemeke/wordtop [INFO] finished tweaking git repo https://github.com/kroemeke/wordtop [INFO] tweaked toml for git repo https://github.com/kroemeke/wordtop written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/kroemeke/wordtop 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2797b3a2663a6366df979c976e10ab36dbf923eaf7f98e023b4a4e58b6f242fb [INFO] running `Command { std: "docker" "start" "-a" "2797b3a2663a6366df979c976e10ab36dbf923eaf7f98e023b4a4e58b6f242fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2797b3a2663a6366df979c976e10ab36dbf923eaf7f98e023b4a4e58b6f242fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2797b3a2663a6366df979c976e10ab36dbf923eaf7f98e023b4a4e58b6f242fb", kill_on_drop: false }` [INFO] [stdout] 2797b3a2663a6366df979c976e10ab36dbf923eaf7f98e023b4a4e58b6f242fb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1c676c72f390e1cdcbdb2c9d068763dc10bb5fc8c7d0e77c959d524c933fa3b9 [INFO] running `Command { std: "docker" "start" "-a" "1c676c72f390e1cdcbdb2c9d068763dc10bb5fc8c7d0e77c959d524c933fa3b9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking vec_map v0.8.2 [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] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ctrlc-3.2.1/src/lib.rs:108:16 [INFO] [stdout] | [INFO] [stdout] 108 | .spawn(move || loop { [INFO] [stdout] | ----- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | type must be known at this point [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: Send` [INFO] [stdout] note: required by a bound in `Builder::spawn` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:381:5 [INFO] [stdout] help: try giving this closure an explicit return type [INFO] [stdout] | [INFO] [stdout] 108 ~ .spawn(move || -> /* Type */ { loop { [INFO] [stdout] 109 | unsafe { [INFO] [stdout] ... [INFO] [stdout] 112 | user_handler(); [INFO] [stdout] 113 ~ } }) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: could not compile `ctrlc` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "1c676c72f390e1cdcbdb2c9d068763dc10bb5fc8c7d0e77c959d524c933fa3b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c676c72f390e1cdcbdb2c9d068763dc10bb5fc8c7d0e77c959d524c933fa3b9", kill_on_drop: false }` [INFO] [stdout] 1c676c72f390e1cdcbdb2c9d068763dc10bb5fc8c7d0e77c959d524c933fa3b9