[INFO] fetching crate timebar 0.2.4...
[INFO] checking timebar-0.2.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate timebar 0.2.4 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate timebar 0.2.4 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 crates.io crate timebar 0.2.4
[INFO] finished tweaking crates.io crate timebar 0.2.4
[INFO] tweaked toml for crates.io crate timebar 0.2.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate timebar 0.2.4 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded preferences v1.1.0
[INFO] [stderr]   Downloaded dtoa v0.4.7
[INFO] [stderr]   Downloaded termion v1.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b10f5a4191f34bbf45471cf9d4360722d22dc6c41a6965a63fb3d5e309ccce38
[INFO] running `Command { std: "docker" "start" "-a" "b10f5a4191f34bbf45471cf9d4360722d22dc6c41a6965a63fb3d5e309ccce38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b10f5a4191f34bbf45471cf9d4360722d22dc6c41a6965a63fb3d5e309ccce38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b10f5a4191f34bbf45471cf9d4360722d22dc6c41a6965a63fb3d5e309ccce38", kill_on_drop: false }`
[INFO] [stdout] b10f5a4191f34bbf45471cf9d4360722d22dc6c41a6965a63fb3d5e309ccce38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 86aad82f2157262eeb9bae88ba3ab5afba548a64ea5f38362cc421bb0bf97e5f
[INFO] running `Command { std: "docker" "start" "-a" "86aad82f2157262eeb9bae88ba3ab5afba548a64ea5f38362cc421bb0bf97e5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]     Checking preferences v1.1.0
[INFO] [stderr]     Checking timebar v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `NaiveDate` is imported redundantly
[INFO] [stdout]  --> src/bar/dday.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chrono::prelude::*;
[INFO] [stdout]   |     ------------------ the item `NaiveDate` is already imported here
[INFO] [stdout] 7 | use chrono::{NaiveDate, NaiveDateTime};
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NaiveDate` is imported redundantly
[INFO] [stdout]  --> src/bar/dday.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chrono::prelude::*;
[INFO] [stdout]   |     ------------------ the item `NaiveDate` is already imported here
[INFO] [stdout] 7 | use chrono::{NaiveDate, NaiveDateTime};
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NaiveDateTime` is imported redundantly
[INFO] [stdout]  --> src/bar/dday.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chrono::prelude::*;
[INFO] [stdout]   |     ------------------ the item `NaiveDateTime` is already imported here
[INFO] [stdout] 7 | use chrono::{NaiveDate, NaiveDateTime};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NaiveDateTime` is imported redundantly
[INFO] [stdout]  --> src/bar/dday.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chrono::prelude::*;
[INFO] [stdout]   |     ------------------ the item `NaiveDateTime` is already imported here
[INFO] [stdout] 7 | use chrono::{NaiveDate, NaiveDateTime};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/dday.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |   let day = string_to_u32(date[0].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                  ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/dday.rs:97:36
[INFO] [stdout]    |
[INFO] [stdout] 97 |   let month = string_to_u32(date[1].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/dday.rs:101:35
[INFO] [stdout]     |
[INFO] [stdout] 101 |   let year = string_to_u32(date[2].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                   ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:153:44
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let day = string_to_u32(birthday[0].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                            ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:157:46
[INFO] [stdout]     |
[INFO] [stdout] 157 |         let month = string_to_u32(birthday[1].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:161:45
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let year = string_to_u32(birthday[2].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:165:46
[INFO] [stdout]     |
[INFO] [stdout] 165 |         let lifespan = string_to_u32(lifespan.clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/timer.rs:51:46
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let hours = string_to_u32(timer_config[0].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/timer.rs:55:48
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let minutes = string_to_u32(timer_config[1].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/timer.rs:59:48
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let seconds = string_to_u32(timer_config[2].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/dday.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |   let day = string_to_u32(date[0].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                  ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/dday.rs:97:36
[INFO] [stdout]    |
[INFO] [stdout] 97 |   let month = string_to_u32(date[1].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/dday.rs:101:35
[INFO] [stdout]     |
[INFO] [stdout] 101 |   let year = string_to_u32(date[2].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                   ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:153:44
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let day = string_to_u32(birthday[0].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                            ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:157:46
[INFO] [stdout]     |
[INFO] [stdout] 157 |         let month = string_to_u32(birthday[1].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:161:45
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let year = string_to_u32(birthday[2].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                             ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bar/life.rs:165:46
[INFO] [stdout]     |
[INFO] [stdout] 165 |         let lifespan = string_to_u32(lifespan.clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]     |                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/timer.rs:51:46
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let hours = string_to_u32(timer_config[0].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/timer.rs:55:48
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let minutes = string_to_u32(timer_config[1].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/bar/timer.rs:59:48
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let seconds = string_to_u32(timer_config[2].clone().trim()).unwrap_or_else(|err| {
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `Command { std: "docker" "inspect" "86aad82f2157262eeb9bae88ba3ab5afba548a64ea5f38362cc421bb0bf97e5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86aad82f2157262eeb9bae88ba3ab5afba548a64ea5f38362cc421bb0bf97e5f", kill_on_drop: false }`
[INFO] [stdout] 86aad82f2157262eeb9bae88ba3ab5afba548a64ea5f38362cc421bb0bf97e5f