[INFO] cloning repository https://github.com/kprestel/amort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kprestel/amort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkprestel%2Famort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkprestel%2Famort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70427610629ed086750ed2697c3b2f759c68fbc0
[INFO] checking kprestel/amort against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkprestel%2Famort" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kprestel/amort on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kprestel/amort
[INFO] finished tweaking git repo https://github.com/kprestel/amort
[INFO] tweaked toml for git repo https://github.com/kprestel/amort written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/kprestel/amort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf2b75a633f31f8adf282ee9df95fbe61287ee802e0e31d098c4ad6019650605
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bf2b75a633f31f8adf282ee9df95fbe61287ee802e0e31d098c4ad6019650605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf2b75a633f31f8adf282ee9df95fbe61287ee802e0e31d098c4ad6019650605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf2b75a633f31f8adf282ee9df95fbe61287ee802e0e31d098c4ad6019650605", kill_on_drop: false }`
[INFO] [stdout] bf2b75a633f31f8adf282ee9df95fbe61287ee802e0e31d098c4ad6019650605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8aa613bf13b98581ca18fbcd02cd07995f5bd8f6184bac7ba0bc1cad4185f562
[INFO] running `Command { std: "docker" "start" "-a" "8aa613bf13b98581ca18fbcd02cd07995f5bd8f6184bac7ba0bc1cad4185f562", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking ryu v1.0.2
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking getrandom v0.1.13
[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 float-cmp v0.4.0
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking globwalk v0.5.0
[INFO] [stderr]     Checking assert_fs v0.11.3
[INFO] [stderr]     Checking amort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::str::FromStr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:203:71
[INFO] [stdout]     |
[INFO] [stdout] 203 |             Err(why) => panic!("Couldn't create {}: {}", display, why.description()),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:208:73
[INFO] [stdout]     |
[INFO] [stdout] 208 |             Err(why) => panic!("Couldn't write to {}: {}", display, why.description()),
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn last(&mut self) -> Option<&PeriodInfo> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::str::FromStr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, `self`
[INFO] [stdout]    --> src/main.rs:219:19
[INFO] [stdout]     |
[INFO] [stdout] 219 |     use std::io::{self, BufRead, BufReader, Read, Write};
[INFO] [stdout]     |                   ^^^^                      ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:203:71
[INFO] [stdout]     |
[INFO] [stdout] 203 |             Err(why) => panic!("Couldn't create {}: {}", display, why.description()),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:208:73
[INFO] [stdout]     |
[INFO] [stdout] 208 |             Err(why) => panic!("Couldn't write to {}: {}", display, why.description()),
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:268:14
[INFO] [stdout]     |
[INFO] [stdout] 268 |         for (i, p) in enumerate(vec) {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:284:13
[INFO] [stdout]     |
[INFO] [stdout] 284 |         let mut f = NamedTempFile::new().unwrap();
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.60s
[INFO] running `Command { std: "docker" "inspect" "8aa613bf13b98581ca18fbcd02cd07995f5bd8f6184bac7ba0bc1cad4185f562", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aa613bf13b98581ca18fbcd02cd07995f5bd8f6184bac7ba0bc1cad4185f562", kill_on_drop: false }`
[INFO] [stdout] 8aa613bf13b98581ca18fbcd02cd07995f5bd8f6184bac7ba0bc1cad4185f562