[INFO] fetching crate mutstr 0.4.0...
[INFO] testing mutstr-0.4.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate mutstr 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mutstr 0.4.0
[INFO] finished tweaking crates.io crate mutstr 0.4.0
[INFO] tweaked toml for crates.io crate mutstr 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutstr 0.4.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7322461eb9d2f73feac0acd0eaac9f7a6068c0436c3877a0a456aef6381406ec
[INFO] running `Command { std: "docker" "start" "-a" "7322461eb9d2f73feac0acd0eaac9f7a6068c0436c3877a0a456aef6381406ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7322461eb9d2f73feac0acd0eaac9f7a6068c0436c3877a0a456aef6381406ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7322461eb9d2f73feac0acd0eaac9f7a6068c0436c3877a0a456aef6381406ec", kill_on_drop: false }`
[INFO] [stdout] 7322461eb9d2f73feac0acd0eaac9f7a6068c0436c3877a0a456aef6381406ec
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44d757491203a344f1de40c6a94abbabf34a6c17692b0730fec10be02350126e
[INFO] running `Command { std: "docker" "start" "-a" "44d757491203a344f1de40c6a94abbabf34a6c17692b0730fec10be02350126e", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutstr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "44d757491203a344f1de40c6a94abbabf34a6c17692b0730fec10be02350126e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d757491203a344f1de40c6a94abbabf34a6c17692b0730fec10be02350126e", kill_on_drop: false }`
[INFO] [stdout] 44d757491203a344f1de40c6a94abbabf34a6c17692b0730fec10be02350126e
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2c5170e1d42e6db567dc845cd70ebe2b4267e1b4b1ec9ada945c1635e445b45
[INFO] running `Command { std: "docker" "start" "-a" "b2c5170e1d42e6db567dc845cd70ebe2b4267e1b4b1ec9ada945c1635e445b45", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutstr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "b2c5170e1d42e6db567dc845cd70ebe2b4267e1b4b1ec9ada945c1635e445b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c5170e1d42e6db567dc845cd70ebe2b4267e1b4b1ec9ada945c1635e445b45", kill_on_drop: false }`
[INFO] [stdout] b2c5170e1d42e6db567dc845cd70ebe2b4267e1b4b1ec9ada945c1635e445b45
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c4e65ddf52d1a80df847e673c1bdc7e498f12a21956e2d8d40baeeba112a03ed
[INFO] running `Command { std: "docker" "start" "-a" "c4e65ddf52d1a80df847e673c1bdc7e498f12a21956e2d8d40baeeba112a03ed", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutstr-8e49851714673ce3)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test implementations::as_mut_str ... ok
[INFO] [stdout] test implementations::as_ref_u8 ... ok
[INFO] [stdout] test implementations::as_ref_str ... ok
[INFO] [stdout] test implementations::display ... ok
[INFO] [stdout] test implementations::add_assign ... ok
[INFO] [stdout] test implementations::default ... ok
[INFO] [stdout] test implementations::as_mut_u8 ... ok
[INFO] [stdout] test implementations::from_slice ... ok
[INFO] [stdout] test implementations::range ... ok
[INFO] [stdout] test implementations::range_from ... ok
[INFO] [stdout] test implementations::range_full ... ok
[INFO] [stdout] test implementations::range_to ... ok
[INFO] [stdout] test implementations::sub_assign ... ok
[INFO] [stdout] test implementations::from_str ... ok
[INFO] [stdout] test implementations::sub_assign_extended ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutstr
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test src/lib.rs - mutstr (line 62) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::size (line 106) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::is_empty (line 121) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::replace_with (line 212) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::clear (line 271) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::ptr (line 77) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::layout (line 134) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::ptr_mut (line 90) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::as_bytes (line 150) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::push (line 239) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::as_str (line 190) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::as_bytes_mut (line 166) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.65s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c4e65ddf52d1a80df847e673c1bdc7e498f12a21956e2d8d40baeeba112a03ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e65ddf52d1a80df847e673c1bdc7e498f12a21956e2d8d40baeeba112a03ed", kill_on_drop: false }`
[INFO] [stdout] c4e65ddf52d1a80df847e673c1bdc7e498f12a21956e2d8d40baeeba112a03ed