[INFO] cloning repository https://github.com/arzg/attoutils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arzg/attoutils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Fattoutils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Fattoutils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3893f57e05c05ba047b7f7d4353220ef411c43b0
[INFO] checking arzg/attoutils against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Fattoutils" "/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/arzg/attoutils on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arzg/attoutils
[INFO] finished tweaking git repo https://github.com/arzg/attoutils
[INFO] tweaked toml for git repo https://github.com/arzg/attoutils written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/arzg/attoutils already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.2
[INFO] [stderr]   Downloaded blake2b_simd v0.5.8
[INFO] [stderr]   Downloaded arrayref v0.3.5
[INFO] [stderr]   Downloaded constant_time_eq v0.1.4
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded path-clean v0.1.0
[INFO] [stderr]   Downloaded cc v1.0.46
[INFO] [stderr]   Downloaded rayon-core v1.6.0
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded backtrace v0.3.40
[INFO] [stderr]   Downloaded syn v1.0.7
[INFO] [stderr]   Downloaded failure_derive v0.1.6
[INFO] [stderr]   Downloaded base64 v0.10.1
[INFO] [stderr]   Downloaded synstructure v0.12.1
[INFO] [stderr]   Downloaded failure v0.1.6
[INFO] [stderr]   Downloaded term_size v0.1.1
[INFO] [stderr]   Downloaded redox_users v0.3.1
[INFO] [stderr]   Downloaded jwalk v0.4.0
[INFO] [stderr]   Downloaded memoffset v0.5.2
[INFO] [stderr]   Downloaded lock_api v0.3.1
[INFO] [stderr]   Downloaded smallvec v0.6.12
[INFO] [stderr]   Downloaded crossbeam v0.7.2
[INFO] [stderr]   Downloaded crossbeam-queue v0.1.2
[INFO] [stderr]   Downloaded rust-argon2 v0.5.1
[INFO] [stderr]   Downloaded backtrace-sys v0.1.32
[INFO] [stderr]   Downloaded num_cpus v1.11.0
[INFO] [stderr]   Downloaded rayon v1.2.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fc52a8f83812d3140d83fc13bcbf2e396c889aefcf30288ebeffa7a0559ab9a
[INFO] running `Command { std: "docker" "start" "-a" "6fc52a8f83812d3140d83fc13bcbf2e396c889aefcf30288ebeffa7a0559ab9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fc52a8f83812d3140d83fc13bcbf2e396c889aefcf30288ebeffa7a0559ab9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc52a8f83812d3140d83fc13bcbf2e396c889aefcf30288ebeffa7a0559ab9a", kill_on_drop: false }`
[INFO] [stdout] 6fc52a8f83812d3140d83fc13bcbf2e396c889aefcf30288ebeffa7a0559ab9a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0872b284f07c31fb35214e45cce0e7f61b8058f5f496717fae3ad1188eafc73d
[INFO] running `Command { std: "docker" "start" "-a" "0872b284f07c31fb35214e45cce0e7f61b8058f5f496717fae3ad1188eafc73d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling anyhow v1.0.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v0.6.12
[INFO] [stderr]     Checking path-clean v0.1.0
[INFO] [stderr]     Checking num_cpus v1.11.0
[INFO] [stderr]     Checking term_size v0.1.1
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking sh v0.1.0 (/opt/rustwide/workdir/sh)
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking libatto v0.1.0 (/opt/rustwide/workdir/libatto)
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking column v0.1.0 (/opt/rustwide/workdir/column)
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `String` in the current scope
[INFO] [stdout]   --> libatto/src/columnate.rs:96:57
[INFO] [stdout]    |
[INFO] [stdout] 96 |         assert_eq!(String::new(), columnate(&[], 80, 8).unwrap());
[INFO] [stdout]    |                                                         ^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `String` in the current scope
[INFO] [stdout]    --> libatto/src/columnate.rs:101:66
[INFO] [stdout]     |
[INFO] [stdout] 101 |         assert_eq!("foo".to_string(), columnate(&["foo"], 80, 8).unwrap());
[INFO] [stdout]     |                                                                  ^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `String` in the current scope
[INFO] [stdout]    --> libatto/src/columnate.rs:110:37
[INFO] [stdout]     |
[INFO] [stdout] 110 |             columnate(&data, 80, 1).unwrap()
[INFO] [stdout]     |                                     ^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `String` in the current scope
[INFO] [stdout]    --> libatto/src/columnate.rs:115:37
[INFO] [stdout]     |
[INFO] [stdout] 115 |             columnate(&data, 80, 0).unwrap()
[INFO] [stdout]     |                                     ^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `String` in the current scope
[INFO] [stdout]    --> libatto/src/columnate.rs:123:64
[INFO] [stdout]     |
[INFO] [stdout] 123 |             columnate(&["word", "exquisite", "medium"], 80, 8).unwrap()
[INFO] [stdout]     |                                                                ^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `String` in the current scope
[INFO] [stdout]    --> libatto/src/columnate.rs:138:14
[INFO] [stdout]     |
[INFO] [stdout] 138 |             .unwrap()
[INFO] [stdout]     |              ^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libatto`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0872b284f07c31fb35214e45cce0e7f61b8058f5f496717fae3ad1188eafc73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0872b284f07c31fb35214e45cce0e7f61b8058f5f496717fae3ad1188eafc73d", kill_on_drop: false }`
[INFO] [stdout] 0872b284f07c31fb35214e45cce0e7f61b8058f5f496717fae3ad1188eafc73d